Browsing by Author "Sheela, V L"

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Enhancement of propagation efficiency in exotic varities of heliconia
(Department of Pomology and Floriculture, College of Agriculture, Vellayani, 2008) Reshmi, C R; Sheela, V L
Evaluation of gerbera (Gerbera jamesonii Bolus) varieties for rain shelter cultivation
(Department of Pomology and Floriculture, College of Agriculture,Vellayani, 2016) Irshana, M P; Sheela, V L
The study entitled ‘Evaluation of Gerbera (Gerbera jamesonii Bolus) varieties for rain shelter cultivation’ was conducted in the Department of Pomology and Floriculture, College of Agriculture, Vellayani during 2015-2016 with the objective of evaluating varieties/ accessions of Gerbera jamesonii Bolus for growth, yield and floral attributes under rain shelter for selecting promising varieties for commercial cultivation. The experiment was laid out in completely randomized design with four replications. One month old tissue culture plantlets of twenty varieties of gerbera viz., Aragon, Mammut, Bismark, Aviance, Mariata, Ruble, Jinx, Lexington, Aquamelone, Palm beach, Atletico, Canzone, Orinaco, Esmara, Double date, Ballroom, Carrera, Poseidon, Louvre, and Beaudine were planted and evaluated for various growth, yield and floral parameters. Vegetative parameters of the plant were studied and Beaudine recorded highest mean plant spread (187.61 cm) and leaf length (38.17 cm). Number of leaves (14.50) and sucker production (3.87) were highest in variety Jinx. Ruble was found to have highest leaf breadth (11.61cm). Significant differences were noticed among varieties for flowering characters. Double date produced highest number of flowers (19.98) during rainy season and highest mean yield in summer was obtained from variety Carrera (14.32). Mammut was the low yielder in both the seasons. Lowest number of days for flowering (47.50 days) was taken by Aragon followed by Esmara (49.87 days). Jinx took lowest number of days from bud opening to harvest maturity (7.00 days). Esmara recorded highest number of days from bud opening to maturity (13.12 days). Palm beach recorded highest number of days for first flowering (129.75 days). Mean yield plant-1 year-1 was highest for Double date (26.64). Flowers of Lexington were found to have longest life in plant (8.70 days). Flower quality also differed significantly among the varieties. Beaudine recorded highest length of flower stalk (57.47 cm), flower diameter (11.55 cm), and ray floret length (4.81 cm). Disc diameter was highest for Esmara (4.75 cm). Ruble recorded highest number of ray florets (75.70). Aquamelone produced flowers with highest mean ray floret width (1.09 cm). Highest stalk girth was observed in Mammut (2.33 cm). Varieties exhibited wide variation in colour of ray florets. Flower disc colour varied from greenish yellow to yellow and black. Highest vase life was recorded for Mariata and Aragon (10.75 days) and was lowest for Orinaco and Louvre (6.25 days). Beaudine, Mammut, Carrera, Mariata and Aquamelone obtained highest score (4.87) for visual appeal. Palm beach, Ball room, Canzone, and Aragon, obtained lowest score. For all the observed characters, phenotypic coefficient of variability (PCV) was higher than genotypic coefficient of variability (GCV). Highest GCV and PCV were noticed for yield in summer season. Difference between phenotypic and genotypic coefficients of variation was highest for number of suckers plant-1. High heritability coupled with high genetic advance was observed in characters like yield in summer season, number of days for first flowering and yield in rainy season. Highly significant and positive phenotypic correlation was obtained for flower diameter with length of ray florets. Yield in summer season exhibited significant positive correlation with total number of flowers produced and number of flowers plant -1. Twenty varieties of gerbera were evaluated under rain shelter and observed significant differences for various growth, yield, and floral attributes. Beaudine was the best performed variety with good vegetative growth, highest flower diameter and stalk length which are important characters for a commercial cut flower. Peak flowering in this variety was observed during summer. Beaudine, Mariata, Carrera, Ruble and Aquamelone can be recommended for commercial cultivation under rain shelter as these performed well under rain shelter and produced good quality flowers, and obtained high BC ratios. Further studies can be conducted on standardization of agro techniques, and integrated nutrient management for quality improvement in gerbera using promising varieties of this study.
Evaluation, molecular characterisation and in vitro propagation of heliconias
(Department of Pomology and Floriculture, College of Agriculture, Vellayani, 2005) Smitha Babu; Sheela, V L
Ex vitro establishment of gladiolus (Gladiolus grandiflorus L.)
(Department of Pomology and Floriculture, College of Agriculture, Vellayani, 2004) Sheena, A; Sheela, V L
Studies were conducted to standardize ex vitro establishment techniques in Gladiolus grandiflorus L. variety Vinks Glory during 2002-2004 in the Department of Pomology and Floriculture, College of Agriculture, Vellayani. The effects of various potting media (sand, soilrite, sand: soil, sand: soil: coirpith, sand: soil: leaf mould), triazole (0, 4 and 8 mg/l), mycorrhizae (Glomus fasciculatum and Glomus monosporum) and height of potting media in the container (4 and 6 cm) on ex vitro establishment of the micropropagated plantlets were studied. Among the different potting media used for ex vitro establishment, soilrite recorded higher survival rates of 86.11 and 80.55 per cent after the first and second fortnight respectively. Triazole application improved the survival rate over non-treated plants. Triazole at 4 and 8 mg/l concentrations recorded 54.16 and 55.83 per cent survival respectively after one month of planting. The two mycorrhizal fungi tried in the study exerted differential effect on survival. Colonization of the roots by mycorrhizal inoculation was found to be high and this enhanced the survival rate of plantlets. Leaf number and plant height was found to be affected by triazole application. Triazole treated plants exhibited a decrease in number of leaves and a reduced plant height due to its growth retarding action which in turn resulted in reduced leaf area index. Triazole application delayed leaf production of plants due to inhibition of leaf expansion. Fresh weight, dry weight, CGR and RGR were found to be high in treatments with triazole application. Growth of mycorrhizal fungi was affected by different potting media. But triazole treatment did not affect the colonization of AMF. Among the two mycorrhizal fungi, Glomus fasciculatum inoculated plants exhibited higher plant height, increased number of roots, delayed emergence of leaf and low stomatal conductance. A decrease in stomatal conductance observed during the later stages of planting out indicate the acclimatization of the plantlets to the ex vitro conditions. Potting media, triazole, mycorrhizae and their interactions affected the stomatal conductance significantly. Height of potting media in the container did not influence the survival and growth parameters. The estimated cost of hardened plants ranged from Rs. 4.50 to 5.25. Eventhough the cost is higher than that of conventional propagation method, this can satisfy the need for large scale production of disease free planting material.
Floral biology and compatibility studies in Heliconia
(Department of Pomology Olericulture, College of Agriculture, Vellayani, 2005) Sanjeev, S J; Sheela, V L
Growth pattern, flowering and yield potential of tissue cultured plants of banana "Musa (AAB Group) Nendran" and standisation of fertilizer schedule
(Department of Horticulture, College of Agriculture, Vellayani, 1995) Sheela, V L; Ramachandran Nair, S
The present study was under taken with the objective of comparing the growth pattern flowering and yield potential of tissue cultured plants of Nendran banana with that of plants produced from suckers and to formulate a suitable fertilizer schedule for the tissue cultured plants Two separate experiments were conducted for this purpose in the Department of Horticulture, College of Agriculture, Vellayani for two seasons from March 1991 to February 1993. The first experiment was laidout in split split plot technique and the second in confounded factorial design in RBD. Tissue cultured plants recorded an increase in yield of 25.63 per cent compared to plants from suckers. The highest yield were obtained in both seasons with the application of 300g nitrogen and 450g potash per plant NK interaction on yield was also significant . Treatments with fertilizer application exceeding six splits did not enhance yield . The optimum nitrogen and potash for the two seasons was 299. 5g and 465. 5g per plant respectively.
Growth, flowering and yield potential of tissue culture banana (Musa AAB cv. Nendran)
(Kerala Agricultural University, Vellanikara, 2001) Sheela, V L; Ramachandran Nair, S
The present experiment in split-split plot technique was laid out at the College of Agriculture, Vellayani during 1991-1993 to evaluate the growth, flowering and yield potential of tissue culture plants of Nendran banana Musa (AAB group) compared to plants from suckers. The initial establishment and early growth phase of tissue culture plants were comparable with that of the suckers. But their growth rate become faster during the later stages and ultimately they recorded an increase of 6.7 per cent in height, 11.92 per cent in girth and 3.35 leaves more than the plants from suckers. They showed less variability in time taken for flowering and recorded an increase in yield of 25.63 per cent compared to plants from suckers. The attributes responsible for the increase in yield were length of bunch, number of fingers and length and girth of finger.
In vitro clonal propagation of two promising gladiolus (Gladiolus grandiflourus L.) varieties
(Department of Pomology and Floriculture, College of Agriculture, Vellayani, 2001) Priyakumari, I; Sheela, V L
Studies were conducted to evolve protocol for the in vitro clonal propagation of Gladiolus grandiflorus L. varieties during 2000-2001 in the Department of Pomology and Floriculture, College of Agriculture, Vellayani. Two varieties Peach Blossom and Tropic Seas were selected for the study. Cormels were used as explant. The effects of culture medium (basal medium, strength of MS basal medium, mode of culture, plant growth substances, carbon sources, activated charcoal, solidifying agent, amino acids and coconut water) and culture conditions on in vitro shoot proliferation via enhanced release of axillary buds were studied. MS medium supplemented with kinetin 2.00 mg I-I and NAA 0.10 mg I-I induced earliest bud initiation in both the cultivars, in the initial culture establishment medium. Highest shoot proliferation In both the varieties was obtained In full strength solid MS medium supplemented with BA 4.00 mg r', NAA 0.50 mg r' and sucrose 40.00 g r ' under light. In vitro rooting in cultivar Peach Blossom was best obtained In MS medium supplemented with IBA 2.00 mg r ' and sucrose 30.00 g r '. In the cultivar Tropic Seas, in vitro rooting was best in MS medium supplemented with IAA 2.00 mg r ' and sucrose 40.00 g r '. The different levels of agar tried had no significant effect on multiple shoot proliferation. Similarly activated charcoal, coconut water and amino acids (glycine and arginine) had no beneficial effect on multiple shoot proliferation. Ex vitro rooting studies were not successful. Planting out of in vitro rooted plantlets in sand soil (2 1) media recorded a survival rate of 100.00 per cent, after 15 days.
Integrated nutrient management for heliconia (Heliconia angusta cv. Christmas Red)
(Department of Pomology and Floriculture, College of Agriculture, Vellayani, 2014) Aryamba, T G; Sheela, V L
The present investigation on “Integrated nutrient management for heliconia” was carried out in the Department of Pomology and Floriculture, College of Agriculture, Vellayani during 2013-2014. Objective of the study was to standardize an integrated nutrient management schedule for heliconia for optimum flower yield and quality. The variety used for the present study was Heliconia angusta cv. Christmas Red. The treatments consisted of different combinations of heliconia mix, vermicompost, neem cake and PGPR mix-I with the basal application of FYM, bone meal and biofertilizers. The experiment was laid out in randomized block design consisting of nine treatments and four replications. The treatment T3 (Heliconia mix 2.5g +Vermicompost 200g + Neem cake100g) was found to be significantly superior in morphological characters (plant height, plant spread, number of leaves per plant, number of shoots, flower canopy height, leaf area, leaf area ratio and leaf area index), flower characters (length of inflorescence, length of spike, length of petiole, number of flower bracts, size of bract, flowers per bract, length of inflorescence stalk , vase life of inflorescence), leaf nitrogen content and soil available P (after the experiment). The lowest number of days taken for flowering was recorded in T6 (Vermicompost 400g + Neem cake 150g). The highest number of flowering shootsper year and the minimum number of days taken to first and fifty percent flowering was registered by T2 (Heliconia mix 2.5g + Vermicompost 150g+Neem cake 75g). The life of flower was observed to be highest for the treatment T8 (PGPR Mix-I + Vermicompost 150g + Neem cake 75g). The visual appeal of flowers were assessed based on four characters, among which T3 (Heliconia mix 2.5g + Vermicompost 200g + Neem cake100g) recorded highest value for colour development and bract arrangement and T8 (PGPR Mix-I + Vermicompost 150g + Neem cake 75g) recorded highest value for glossiness and general appearance of flower. The leaf P content was highest in T6 (Vermicompost 400g + Neem cake 150g) whereas T1 (Heliconia mix 2.5g + Vermicompost 100g + Neem cake50g) recorded the highest content of potassium and soil available organic carbon. The highest amount of soil available potassium before the experiment was recorded by T2 and after the experiment T9 registered the highest value. Highest benefit cost ratio was recorded in T3 (Heliconia mix 2.5g + Vermicompost 200g+Neem cake100g). The study revealed T3 (Heliconia mix 2.5g + Vermicompost 200g + Neem cake100g) as the best treatment in terms of growth characters, flowering characters and vase life studies followed by T8 (PGPR Mix-I + Vermicompost 150g + Neem cake 75g). Cultivars of heliconia differ greatly in size of plants as well as size of inflorescences. Heliconia angusta cv. Christmas Red used in this study was comparatively small sized cultivar. Further nutrient trials with large sized cultivars like Bihai and Carribea can be taken up considering the results obtained in the present study as a guideline.
Nutrient management in gerbera (Gerbera jamesonii Bolus.) grown under naturally ventilated polyhouse
(Department of Pomology and Floriculture, College of Agriculture, Vellayani, 2018) Anaswara, S J; Sheela, V L
The thesis work entitled “Nutrient management in gerbera (Gerbera jamesonii Bolus.) grown under naturally ventilated poly house” was carried out at the Department of Pomology and Floriculture, College of Agriculture, Vellayani during 2016-2018. The study was to assess the performance of five gerbera varieties to different doses of fertilizers with a view to find out the best fertilizer dose for each variety. This study also aimed for the standardization of nutrient management schedule for Gerbera jamesoniiBolus. Five varieties were selected for the study (V1- Beaudine, V2- Double date, V3- Mammut, V4- Esmara, V5- Aquamelon). Different nutrient treatments (N1- 10:10:10 N, P2O5, K2O g m-2, N2- 15:15:15 N, P2O5, K2O g m-2, N3- 20:20:20 N, P2O5, K2O g m-2) were applied to the varieties at monthly and fortnightly interval. The experiment was laid out in completely randomised design consisting of thirty treatment combinations and three replications. The study revealed that variety Beaudine was significantly superior in terms of vegetative parameters viz., plant spread (156.19cm) at 4 MAP, number of leaves (13.31) at 8 MAP and leaf length (37.09cm) at 4MAP. Variety Mammut was significantly superior in leaf breadth (11.03cm) at 10 MAP and number of suckers plantˉ1(2.59) at 6 MAP. The nutrient treatment 10:10:10 N, P2O5, K2O g mˉ2 produced significantly higher plant spread (171.29cm) at 10 MAP, number of leaves (12.54) at 6 MAP, leaf length (34.04cm) at 4 MAP, leaf breadth (12.35cm) at 4 MAP and number of suckers plant-1 (2.97) at 6 MAP. The level of split application of nutrients s1 showed significantly superior values for plant spread (148.86cm) at 4 MAP, number of leaves (10.95) at 8MAP, leaf length (31.67cm) at 4 MAP, leaf breadth (10.79cm) at 4MAP and number of suckers plantˉ1 (2.42) at 6MAP. The variety Esmara when treated with 10:10:10 N, P2O5, K2O g mˉ2 at monthly interval of split application of nutrients recorded significantly highest value for plant spread (183.38cm) at 10 MAP. Variety Beaudine treated with 10:10:10 N, P2O5, K2O g mˉ2 (1.6: 1.6: 1.6 N, P2O5, K2O g plantˉ1)at monthly interval of split application of nutrients recorded significantly higher values for number of leaves (15.23) at 6MAP and leaf length (46cm) at 4 MAP. Variety Mammut treated with 10:10:10 N, P2O5, K2O g mˉ2 split application of nutrients at monthly intervals recorded significantly higher values for leaf breadth (15.74cm) at 4 MAP and number of suckers plantˉ1 (3.89) at 6 MAP. Regarding the flowering characters, Variety Esmara treated with 10:10:10 N, P2O5, K2O g mˉ2 of split application of nutrients at monthly intervals recorded the lowest value for number of days taken for flowering (17) and variety Double date treated with 15:15:15 N, P2O5, K2O g mˉ2 at fortnightly interval of split application of nutrients recorded lowest value for number of days taken from bud initiation to harvest (7.9) and there was no significant difference on flower longevity on the plant. In flower characters, Mammut variety supplied with a combination of 10:10:10 N, P2O5, K2O g mˉ2 fertilizers at monthly interval of split application of nutrients recorded highest flower diameter (11.24cm) and width of ray florets (1.00cm).There was no significant difference observed for flower disc diameter and length of the ray florets. Esmara variety with a combination of 10:10:10 N, P2O5, K2O g mˉ2 fertilizers at monthly interval of split application of nutrients recorded the highest number of ray florets (65.01).Beaudine variety with a combination of 10:10:10 N, P2O5, K2O g mˉ2 fertilizers at monthly interval of split application of nutrients recorded the highest stalk girth (2.39cm) and stalk length (79.34cm). In yield parameters, highest number of flowers produced plant-1year-1(25.75) and higher yield of flowers in relation to season (15.25) at rainy season was recorded for variety Esmara treated with a combination of 10:10:10 N, P2O5, and K2O g mˉ2 with a split application of nutrients at monthly intervals. The vase life of flowers and water uptake showed no significant difference among the treatment combinations All the five varieties while treated with 10:10:10 N, P2O5, K2O g mˉ2 at monthly intervals resulted high values for vegetative, flower and flowering characters. The best performance for Beaudine followed by Esmara and Aquamelon. BC ratio was highest for Beaudine. Future line of work may be standardisation of agrotechniques for gerbera under Kerala conditions.
Nutrient Management practices for Heliconia under open condition and as intercrop in coconut garden
(Department of Pomology and Floriculture, College of Agriculture, Vellayani, 2013) Nihad, K; Sheela, V L
Nutrient requirement and postharvest studies on bush jasmine (Jasminum sambac Ait)
(Department of Horticulture, College of Agriculture, Vellayani, 2001) Nirmalatha, J D; Sheela, V L
The experiment was conducted at the Department of Horticulture, College of Agriculture, Vellayani during 1998-1999 with the objective to standardise the nutrient requirement in bush jasmine and its post harvest studies. The results of experiment I revealed that the growth characters like length of main shoot, number of primary branches, length of primary and secondary branches, spread of plant in East-West and North-South direction performed well at the highest dose of major nutrients applied viz., 600 kg N, 600 kg P20S and 600 kg K20 ha'. The maximum number of secondary branches was obtained at 450 kg ha! of K20 and P20S' The yield of flowers was highest at lower doses of major nutrients applied viz., 300 kg N, 300 kg P20S and 450 kg K20 ha ". Regarding monthly yield pattern lower levels of nutrients (N and P) gave better yield in general, potassium was effective at 450 kg K20 ha". During the growth period the effect of nutrients applied was significant initially then declined in between and finally the yield increased in tune with the season. The 100 bud weight of flower buds was maximum at 300 kg ha' and 300 kg P20S ha ": The time taken for flower opening delayed at 600 kg P20S ha". 2 Foliar nitrogen was maximum at highest levels of major nutrients applied. The leaf phosphorus content was maximum at 450 and 600 kg N ha:", 600 kg ha' of P205 and K20. Content of leaf potassium was highest at 450 kg ha! of Nand P205 and 600 kg K20 ha:". Foliar magnesium was high when nitrogen was applied at 600 kg N ha:", phosphorus at 300 kg ha ". Foliar zinc content was recorded the highest when 450 kg ha! of nitrogen and potassium was applied. Phosphorus applied at 450 and 600 kg P205 ha! increased the foliar zinc content. Lowest dose of nitrogen (300 kg ha') increased the carbohydrate content of flowering shoot. Uptake of nitrogen and phosphorus was found effective at 600 kg N : 600 kg P205 : 600 kg K20 ha'": But uptake of potassium was maximum at 600 kg N : 450 kg P205 : 450 kg K20 ha". The uptake of magnesium recorded highest value at 600 kg N : 300 kg P205 : 300 kg K20 ha! and 450 kg K20 ha". Zinc uptake was maximum with highest dose of nitrogen and phosphorus applied and 300 and 450 kg K20 ha! applied. The essential oil content was maximum at nl and ra. levels. The available soil N, P, K content was maximum at the highest dose of nutrient applied (600 kg N : 600 kg P205 : 600 kg K20 hal ). The experiment II on post harvest studies on bush jasmine proved significant effects between the treatments. For the treatment V oEoSo time taken for flower opening was delayed and the time taken for retention 3 of colour and turgidity was maximum at lowest dose of Nand K (300 kg ha:") and highest dose of P applied (600 kg P20S ha'). The buds given ethylene absorbant treatment (VoE I So) along with major nutrients applied delayed the time taken for flower opening, retained colour at 450 kg ha! Nand 600 kg P20S ha". Time taken to retain turgidity was influenced by nitrogen at n2, phosphorus at P3 and potassium at k2 and k3 levels. Post harvest treatment of buds with ethylene absorbants and newspaper lining (V 1 EISa) along with major nutrients applied increased shelf life. The time taken for flower opening (n'), p-., k,,) and the colour _ .J .J of flowers was retained longer at n2 and P3 levels. In general the shelf life of flowers was extended by the vanous post harvest treatments compared to control. The time taken for flower opening was delayed maximum by ethylene absorbant treated buds. Low temperature treatment was best to increase the longevity of buds by retaining colour and turgidity,. The present study revealed that lowest dose of fertilizer application (300 kg N : 300 kg P20S : 450 kg K20 ha") favoured the floral characters, whereas highest dosage increased vegetative growth. The shelf life of flowers can be enhanced by post harvest treatmens (ethylene absorbants and low temperature) along with fertilizer application.
Nutrient requirement for bush jasmine (Jasminum sambac Ait.)
(Department of Horticulture, College of Agriculture, Vellayani, 1999) Asha Raj; Sheela, V L
The investigation "Nutrient requirement of bush jasmine, Jasminum sambac Ait." was conducted at Department of Horticulture, College of Agriculture, Vellayani, Thiruvananthapuram during 1996-'98 inorder to standardise the requirement of major nutrients (N, P and K) for the growth of flowering of bush jasmine. The treatments consisted of factorial combinations of three levels each of nitrogen (50, 100 and 150 kg N ha"), phosphorus (50, 100 and 150 kg P20S ha-I) and potassium (50, 100 and 150 kg ~20 ha") with two controls. The experiment was laid out as 33 + 2 Factorial Randomised Block Design with three replications .. Vegetative characters like the length of main shoot, number of primary and secondary branches, length of primary and secondary branches, North-South and East-West spread of the bush, were significantly higher at the highest level of major nutrients viz., 150 kg N, 150 kg P20S and 150 kg K20 ha'. At the maximum level of major nutrients with 150 kg N : 150 kg P20S : 150 kg K20 ha'", yield of flower buds was found significantly higher. Other flowering characters like monthly yield pattern and weight of hundred flower buds were not found to be influenced by nutritive 2 treatments. However, time taken for opening of lower buds after harvest was maximum at 150 kg P20S ha'". Content of N, P and K in leaves revealed that maximum content of foliar nitrogen noticed at 150 kg N : 50 kg K20 ha! while foliar potassium content was maximum at 50 kg N : 100 kg P20S : 150 kg K20 ha'. Foliar phosphorus content was not at all influenced by nutrient application. Uptake of nutrients was not found to be influenced by applied nutrients where as DMP was maximum at the highest dose of maj or nutrients (150 kg N : 150 kg P20S 150 kg K20 ha"). Available soil nutrient status revealed that maximum content of nitrogen and phosphorus in soil was noticed at 150 kg N : 150 kg P20S and 150 kg K20 ha'". But maximum available potassium was noticed with 50 kg N : 150 kg P20S and 150 kg K20 ha'. Maximum essential oil content was obtained with 100 kg N : 100 kg P20S and 150 kg K20 ha'". Carbohydrate content of flowering shoot was found to be highest with 50 kg N : 150 kg P20S : 150 kg K20 ha-I. In general, highest dose of major nutrients, n3 (150 kg N ha-I), P3 (150 kg P20S ha! and k3 (150 kg K20 ha") was found best for cultivation of bush jasmine. However, as maximum response was shown at respective higher levels of major nutrients, higher levels of these nutrients can be tried to find out optimum nutrient combination for commercial cultivation.
Performance analysis of tissue culture plantlets of Gerbera jamesonii Bolus. as influenced by microbial inoculants
(Department of Pomology and Floriculture, College of Agriculture, Vellayani, 2016) Shewthashri Mohanan; Sheela, V L
Potassium nutrition in rainfed banana Musa (AAB group) Palayan kodan
(Department of Pomology, Floriculture and Landscapping, College of Horticulture, Vellanikkara, 1982) Sheela, V L; Aravindakshan, M
Standardization of in vitro pollination and fertilization technique for heliconia
(Department of Pomology and Floriculture, College of Agriculture, Vellayani, 2006) Dhanya, A; Sheela, V L
Variability and character association in heliconiya (heliconia spp)
(Department of Pomology and Floriculture, College of Agriculture, Vellayani, 2012) Narkar Nikhil Dileep; Sheela, V L
Variability studies in seedlings of heliconia (Heliconia spp.)
(Department of Pomology and Floriculture,College of Agriculture, Vellayani, 2011) Kadam Darshan, Shashank; Sheela, V L