Browsing by Author "Lila Mathew, K"

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Dormancy and storage of seeds in garcinia cambogia desr.(Kodampuli)
(Kerala Agricultural University, 1995) Lila Mathew, K; Sarah George, T
Effect of bioregulators on growth, flowering and postharvest life of crossandra (Crossandra infundibuliformis (L.) Nees.)
(Department Of Pomology And Floriculture, College Of Horticulture, Vellanikkara, 1997) Sreekala, C; Lila Mathew, K
Effect of time of planting and growth regulators on flowering and vase life of Gerbera jamesonii
(Department of Pomology and floriculture and Landscaping, College of Horticulture,Vellanikara, 1993) Suma, P; Lila Mathew, K
Studies were carried out in the Department of pomology and Floriculture, College of Horticulture, Vellanikkara, Thrissur, during 1991 – 93 to examine the effect of time of planting and growth regulators on flowering and vase life of gerbera. Four varieties, namely , Eoliet, Presley, Pritty and Sunbird and five treatments, viz., GA 50 ppm, GA 100 ppm, CCC 500 ppm, CCC 750 ppm and control, were tried. Varieties were found to have significant influence on both vegetative as well as the floral characters whereas the treatments did not have any significant effect on vegetative characters of the Gerbera cultivars in general, when evaluated in the first season. In the second season both varietal and treatment effects were not consistent. Variety Presley was found to be early flowering while Eoliet was late flowering. GA 50 ppm and GA 100 ppm hastened flowering whereas CCC 500 ppm and CCC 750 ppm delayed it. In general the longevity of flowers was maximum in varieties Eoliet and Sunbird. Variety Presley had the least longevity. Among the treatments, CCC 750 ppm and GA 50 ppm increased the longevity of flowers in field. Maximum number of blooms was produce by Presley and the minimum by Eoliet. In general GA 100 ppm and CCC 750 ppm increased the number of blooms. In general CCC 750 ppm, GA 50 ppm and GA 100 ppm had a significant positive influence on flower diameter. In general variety sunbird had the maximum stalk length and diameter, while Pritty produced the shorest stalks. CCC 500 ppm and CCC 750 ppm had the best effect on stalk length. Vase life was found to be significantly increased by GA 100 ppm and CCC 750 ppm treatments given to the plants. Five per cent sucrose + 20 ppm AgNO3 significantly increased the longevity of flowers in vase. Planting in June was found to be better than October planting with respect to vegetative as well as floral characters, especially for number of flowers and flower diameter. Among the varieties, with respect to growth and number of flowers, Presley was found to be superior. In the correlation studies flower number was found to have positive and highly significant correlation with plant height and leaf area whereas flower diameter had significant negative correlation with leaf area and stalk length. Petiole length, stalk diameter and leaf number had positive correlation with this character. Vase life had significantly positive correlation with fresh weight of flowers.
Enhancement of spike qualities of gladiolus (Gladiolus grandiflorus L.)
(Department of pomology and floriculture, College of horticulture, Vellanikkara, 2015) Simmy, A M; Lila Mathew, K
Floral biology, fruitset and fruit development in sweet lovi-lovi (Flacourtia Cataphracta Roxb.)
(Kerala Agricultural University, 1999) Sarah T George; Lila Mathew, K; Mridula, K R
Sweet lovi-lovi, f'lacourtia cataphracta Roxb., is dioecious with male and female flowers borne on separate trees. The male tree flowers two weeks earlier than the female during October and the female in mid November. The flowers in male appear as axillary or terminal cymose clusters while those in female trees are in fascicles. In the male trees, 25 days are required for the complete flower development and in the female it takes 18-20 days. About 19 percent of pollen are viable with a maximum pollen germination of (80.7%) with pollen tube length of (132.6 jim) in 4 per cent sucrose + 0.25 per cent agar media. The fruit development from fruitsct requires 78-80 days. The fruits are harvested in February taking 98-100 days from flower initiation. The shelf life of the fruit is very low and proper harvesting methods and storage devices are required to prolong the shelflifeofihe fruits.
Genetic diversity and canopy management in jack fruit (artocarpus heterophyllus lam.)
(Department of Pomology and Floriculture, College of Horticulture, Vellanikkara, 2003) Muthulakshmi, P; Lila Mathew, K
Malformation in Kodampuli (Garcinia Cambogia Desk.)
(Kerala Agricultural University, 1994) Sarah T George; Lila Mathew, K; Kesavachandran, R; Rajeevan, P K
Morpho-molecular characterization of jackfruit (Artocarpus heterophyllus Lam.) accessions
(Department of Pomology and Floriculture, College of Horticulture, Vellanikkara, 2015) Aswini, A; Lila Mathew, K
Morphological and biochemical variations in different sex forms of kodampuli (Garcinia gummi-gutta L.)
(Kerala Agricultural University, 1999) Muthulakshmi, P; Sarah T George; Lila Mathew, K
Kodampuli seedlings segregate into males and bisexuals at flowering. A study has been carried Out to differentiate the sex by morphological and biochemical characters. The results indicated that there is no significant differences between male and bisexual plants in terms of morphological characters except the colour of emerging flush in which pink and pinkish shades were more prevalent in biscxuals than in male Significant differences between male and bisexual trees were noticed with respect to total phenol of young (208.60 nijj/IQOg and 118.10 mg/IOOy respectively) and mature (I397.H2 mg/IOO!> and 794.53 mg/IOOg respectively) leaves. The thin layer chromaiographic profile of phenolics showed one additional spot in male than in bisexual plants, li-leclroprioresis revealed similar banifmy pattern for pcmxidase enzymes in both male and bisexual plants.
Propagation studies in nutmeg
(Department of Horticulture (Pomology & Floriculture and Landscaping), College of Horticulture, Vellanikkara, 1979) Lila Mathew, K; Damodaran, V K
The studies on the propagation of nutmeg (MYRISTICA fragrans Houtt) were carried out at the Instructional Farm of the College of Horticulture, and at the District Agricultural Farm, Mannuthy during the period from April 1978 to July 1979. The studies consisted of two methods - namely, the seed propagation and vegetative propagation. The seed propagation studies included viability studies and the effect of growth regulators on germination and the subsequent growth of the seedlings. Under vegetative propagation, the main objective was to standardise an economical and effective method of vegetative propagation of nutmeg. The studies revealed that maximum per cent and quicker germination was obtained by sowing the seeds during the month of June and there was significant difference between the heavy and light group of seeds. Seeds stored in moist sand remained viable for a longer period than those stored in metalic containers. Gibberllic acid treatment had significant effect on the germination of seeds and the subsequent growth of the seedlings. Seeds treated with 200 ppm GA for 24 hours gave good results as compared to other treatments. Among the different methods of vegetative propagation tried, inarch grafting gave the highest per cent of sucess - about 95 per cent during the month of June. The growth of the grafts was poor when compared to the seedlings of same age during the initial stages, but the growth was progressive and satisfactory after two months (of seperation). Other methods of vegetative propagation viz., side-grafting, veneer grafting and wedge grafting were also successful up to 40 per cent, but the growth of the grafts was less than that of the seedlings. However, these methods need standardisation for use on a large scale programme of propagation of nutmeg.
Response of papaya to organic manures, plant growth promoting microorganisms and mulching
(Department of Pomology and Floriculture,College of Horticulture, Vellanikkara, 2010) Shijini, E M; Lila Mathew, K
A research project entitled “Response of papaya to organic manures, plant growth promoting microorganisms and mulching” was conducted in the Department of Pomology and Floriculture, College of Horticulture, Vellanikkara during 2008-2010. Major objectives were to study the response of organic manures, plant growth promoting microorganisms on growth, yield and quality of papaya, under humid tropical climate. Selection of ecofriendly mulch for papaya was also aimed as it saves water and reduces weed growth. Papaya variety CO 7 was used for the investigation. The study consisted of two field experiments, laid out in RBD with three replications in each experiment. Experiment I included 12 treatments which were combinations of organic manures and plant growth promoting microorganisms along with inorganic fertilizers. In Experiment II effect of different mulches on growth, yield and quality of papaya, soil moisture retention and weed growth was studied. There were seven treatments in experiment II which included six types of mulches. The study revealed that application of RDF (240:240:480 g NPK/plant/year) + vermicompost (13 kg) + plant growth promoting microorganisms, viz; Trichoderma and Pseudomonas (5 g and 10 g/plant respectively) exhibited superiority in terms of vegetative and floral characters and recorded highest fruit yield (42.59 kg/plant). Application of RDF + poultry manure (10 kg/plant) + plant growth promoting microorganisms were also found superior with respect to growth and yield attributes. Quality of the fruits in terms of TSS, total sugars, acidity, overall acceptability and shelf life was highest in organic treatments where as fruit yield per plant was found lowest in these treatments. Soil properties like pH, organic matter, available N, P and K were found to be improved by application of organic manures. Application of plant growth promoting microorganisms enhanced the microbial population (bacteria, fungi and actinomycetes) in the soil. Population of Trichoderma spp. and Pseudomonas fluorescens was also increased. Regarding the cost of cultivation, application of biovermi incurred highest cost per ha. In Experiment II, plants mulched with biodegradable polythene and black polythene mulches showed positive response with regard to vegetative and floral characters and recorded highest fruit yield (40.99 and 40.76 kg/plant respectively). Quality attributes of the fruits were also found to improve in these treatments. The polythene mulches showed superiority in terms of soil moisture retention and it reduced the number of irrigation. Significant reduction in weed growth was also noticed in the plots mulched with polythene mulches. Soil nutrient status was improved and was superior in the treatments mulched with organic mulches. With respect to cost of cultivation also treatments T6 and T7 were superior. Over all assessment indicated that application of RDF (240:240:480 g of NPK) + vermicompost (13 kg) + Trichoderma (5 g) + Pseudomonas (10 g) was highly beneficial for growth, yield and quality improvement in papaya. Similarly mulching with biodegradable polythene was proved to be good as it was effective in weed control, soil moisture retention, thereby improving the growth, yield and quality of papaya and it is also ecofriendly.
Standardisation of softwood and epicotyl grafting in Garcinia. cambogia Desr.
(Department of Pomology & Floriculture, College of Horticulture, Vellanikkara, 1992) Nazeema, K K; Lila Mathew, K
The investigations on standardisation of softwood and epicotyl grafting in Garcinia cambogia was carried out in the Department of Pomology and Floriculture, College of Horticulture, Vellanikkara, Trichur during the period, 1990-92. The studies revealed that seed coat removal or seed treatment with growth regulators increased the final percentage of seed germination compared to control though there was no significant difference between the treatments. Seed coat removal could enhance the seed germination remarkably. After the beginning of germination seeds with intact seed coat completed germination within seven weeks while those seeds without seed coat required only five weeks for the same. In order to obtain an early and higher germination, seed coat removal along with seed soaking with 500 ppm GA for 12 h could be adopted. This treatment registered 90.667 per cent germination. Softwood grafting on 18 months old G. cambogia rootstock was found to be the best method of vegetative propagation compared to epicotyl grafting (using G. tinctoria rootstocks) and double grafting (using different combinations
Variability and propagation studies in Pummelo (Citrus grandis(L.) osbeck)
(Department of Pomology and Floriculture, College of Horticulture, Vellanikkara, 2006) Anupama, T V; Lila Mathew, K