Browsing by Author "Peter, K V"

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Additional source of resistance to bacterial wilt in brinjal
(Kerala Agricultural University, 1986) Jessykutty, P C; Peter, K V
Arka jyothi - a promising watermelon hybrid
(Kerala Agricultural University, 1993) Abdul Vahab, M; Devadas, V S; Peter, K V
Bacterial wilt resistance in a few selected lines and hybrids of brinjal (Solanum Melongena L.)
(Kerala Agricultural University, 1993) Geetha, F T; Peter, K V
Biotechnology in horticulture methods and application
(NEW INDIA PUBLISHING AGENCY,NewDelhi, 2013) Peter, K V
Climate resilient crops for the future
(New India Publishing Agency, 2015) Peter, K V
Combining ability analysis in capsicum annuum
(Kerala Agricultural University, 1992) Girija Devi, T; Peter, K V
Combining ability analysis revealed the preponderance of additive gene action for green fruit yield per plant in chilli. Non-additive gene action controlled expression of plant height and days to first green fruit harvest.
Compatability among varieties in Capsicum annum L. and Frutescens L.
(Department of Olericulture, College of Horticulture,Vellanikkara, 1984) Krisnakumari, K; Peter, K V
Cross compatibility between Abelmoschus manihot (L.) Medic.and Abelmoschus Esculentus (L.) Moench
(Kerala Agricultural University, 1988) Dalia Cherian; Peter, K V
The three accessions of Abelmoschus manihot were crossable with Abelmoschus esculentus cv. Pusa Sawani. Abelmoschus esculentus crossed well with Abelmoschus manihot ssp. tetraphyllus at F, level (Cl = 95%). This was evident from F0 fruit set, F, seed set and germination of Fj seeds. But the F, plants did not bear normal seeds and Fa germination could not bs raised, indicating chromosomal nonhomology between the two species. The symptomless carrier type of host reaction cannot be transferred by conventional methods.
Diversity interrelationships among capsicum spp. and forms and developement of papricas
(Department of Olericulture, College of Horticulture, Vellanikkara, 1994) Indira, P; Peter, K V
Capsicum, a new world genus, has richness in diversity that has not yet received the needed attention. The cultivated chilli varieties offer many problems in classification because of their great number, the transitory nature and creation of new ones through hybridization and selection processes. The present studies on “Diversity inter relationships among Capsicum spp. And forms and development of paprikas” were conducted at the College of Horticulture, Vellanikkara. The main objectives were grouping of chilli genotypes biometrically and biochemically and development of paprikas. For biometrical grouping chilli genotypes belonging to four cultivated species of Capsicum were evaluated during two seasons (August, 1991- January, 1992 and May, 1992- September, 1992). They were clustered into different groups based on D2 values. There were 9 clusters during first season and 6 clusters during second season. The distribution of genotypes into clusters showed no regularity. The isozyme patterns of two enzymes viz.peroidase and esterase were studied in the three cultivated species of Capsicum and also for the nine biometrical groups. Among the different plant parts studied roots showed clear bands in case of peroxidase and mature leaves were the best sampling tissue for esterase enzyme. There were species specific bands in all the three species. The nine biometrical groups showed variation for banding pattern in case of peroxidase and esterase. There were some common bands for both the enzymes. Twenty paprika genotypes were collected from different sources and their morphological descriptions were made as per IBPGR descriptor. Field evaluation was done for two seasons (October –March, 1991; May – October, 1992). There was significant difference among genotypes for the different characters studied. There was much seasonal variation also. CA 517 recorded minimum incidence of bacterial wilt during both seasons under the field conditions. CA 582 showed highest colour value but CA 604 and CA 605 recorded minimum pungency.
Effect of ethephon on earliness, vegetative characters, fruit characters and fruit yield in cucumis genotypes
(Kerala Agricultural University, 1986) Sadhan Kumar, P G; Peter, K V
In twenty Cucumis genotypes, whole plant sprays with 3 levels of ethephon produced significant reduction in length of main vine, number of nodes to first female flower and first fruit, seed number and flesh thickness. Number of nodes to first male flower and number of primary branches per plant increased significantly. The effect of ethephon was significant for flesh thickness and fruit yield per plant. Ethephon had no significant effect on fruit length, weight and volume.
Effect of graded doses of nitrogen, phosphorus and potassium on growth and yield of oriental pickling melon (Cucumis melo var. Conomon)
(Kerala Agricultural University, 1984) Hassan, M A; Sasidhar, V K; Peter, K V
A 33 factorial experiment with nitrogen (0,60, 120 kg/ha), P^ (0, 45, 90 kg/ha) and KaO (0, 45, 90 kg/ha) was laid out to find out optimum and economic levels of the above nutrients for maximising fruit yield in oriental pickling melon. Response to nitrogen was observed to be quadratic and the optimum level was calculated as 96.6 kg/ha and the economic level as 45.38 kg/ha. The P206 application produced no significant effects in melon for different characters studied. Response to K20 was linear.
Effect of organic, inorganic fertilizer and their combination on physico-chemical and biological properties of soil cropped under clustered chilli (Capsicum Annuum L.)
(Department Of Olericulture, College Of Horticulture, Vellanikkara, 1988) Meena Nair; Peter, K V
The present investigations were conducted at the Instructional Farm, College of Horticulture, Vellanikkara during March to July 1987, August to December 1987 and January to April 1988, to study the effect(s) of organic and inorganic fertilizers and their combinations on physico-chemical and biological properties of soil cropped under clustered chilli; variety KAU Cluster. The experiment comprised of eight treatments and was laid out in a randomised block design. The study revealed that plant height and branches/ plant increased with increasing rates of nitrogen along with FYM. The best result was recorded by treatment T7 (15 t of FYM + 175: 40: 25 kg N, P2O5 and K2O/ha). Higher rates of nitrogen along with FYM induced earliness and increased fruit yield. The various treatments did not record any significant change in fruit length or biomass weight. The organic and inorganic fertilizers and their combinations had no significant effect on the physical and chemical properties of soil. Maximum water holding capacity differed significantly in plots receiving 30 t FYM/ha when compared to control. With regard to chemical properties, the plots receiving inorganic fertilizers alone showed significant reduction in organic carbon, total N and K, available N and P and CEC, when compared to control. The pH and EC of the soil did not show any significant change during the course of experimentation. Studies on the influence of different treatments on the natural incidence of vesicular-arbuscular mycorrhiza revealed that maximum infection was seen in plots receiving FYM alone. Infection was also maximum on 30th day after transplanting. Maximum income as well as net income after deducting the additional cost of manures and fertilizers was obtained from plots receiving higher doses of N along with FYM.
Effects of graded doses of nitrogen, phosphorus and potassium on yield of pumpkin (Cucurbita Moschata Poir)
(Kerala Agricultural University, 1983) Rajendran, P C; Gopalakrishnan, P K; Gopalakrishnan, T R; Peter, K V
Efficiency of four methods of selection in brinjal improvement in relation to resistance to bacterial wilt
(Department of Olericulture, College of Horticulture, Vellanikkara, 1984) Asha Shankar, M; Peter, K V
Bacterial wilt caused by pseudomonas solanacearun is one of the serious problems that limits its cultivation in kerala. With the identification of SM- 6, a brinjal line from Kerala Agricultural University showing considerable degree of resistance to wilt, the prospects of brinjal cultivation has become brighter under the acidic soil conditions of kerala. Studies at the department of Olericulture, Kerala Agriculture University, indicated the presence of transgressive seggregant(s) within SM-6 which were grouped into eleven distinct types. Hence a study was undertaken at the College of Horticulture, Vellanikara to improve upon the existing eleven types for earliness and yield keeping resistance to wilt intact. Each of the eleven genetics groups were improved through four methods of selection mass, single plant, pure line and single seed descent. The selections were conducted in two consecutive cycles. The criteria for selecting elite plant types were fruits/plant and total yield/plant. Observations were recorded on earliness, Vegitative characters, Productive characters and their components. The relative efficiency of the four methods of selection to improve economic characters was critically examined. Being a cross pollinated crop mass selection and single plant selection were found superior to pure line selection and single seed descent to improve economic characters. Genetic information line genotypic co-efficient of variation, phenotypic co-efficient of variation, heritability in the broad sense, genetic advance and genetic advance as percentage of mean was estimated for the progenies developed through four method of selection. The relative efficiency of the four methods of selection was also examined in terms of improving genetic parameters of progenies. Genetic advance as percentage of mean was highest for progenies developed through single plant selection. Realised genetic gain for economic characters as compaired to the overall mean was positive for progenies developed through maas and single plant selections. The eleven genetic groups were also evaluated under each selection method for the characters under study. The genetic groups SH-6-2, SH-5-1 and SH-6-4 were promising for fruits/plant and yield/plant. The level of resistance of sm-6 to bacterial wilt was assessed under four methods of selection. Single seed descent was found effective to improve to improve the level of resistance of sm-6 to bacterial wilt. When screened under field conditions, the genetic groups sm-6-1, sm-6-4,and sm-6-9 exhibited complete plant immunity under all the four methods of selection. In both the cycles. Multi locational trials and artificial inoculation studies further confirmed the resistance of the basic population of sm-6 to bacterial wilt.
Evaluation for host reaction to Aphis craccivora Koch in cowpea
(Kerala Agricultural University, 1986) Sulochana, K A; Peter, K V
The study indicated TVU 1889 as a source of resistance to Aphis craccivora and could be used in breeding programmes.
Evaluation for processing characteristics and their expression in a bacterial wilt resistant genetic background in tomato
(Department of Processing Technology, College of Horticulture, Vellanikkara, 1990) Alice Kurian; Peter, K V
The present study was undertaken to identify ideal processing types suitable for ketchup and paste making and associated shelf life of ketchup. The prospects of growing these processing types are precarious in Kerala, unless processing trails are coupled with bacterial wilt resistance . The outcome of the investigations on evaluation for processing characteristics in tomato and their expression in a bacterial wilt genetic background are briefed below. The processing tomatoes were distinct from fresh market types with respect in their elongated shape index >I, characterised by fewer locules, high pericarp thickness , increased firmness and resistance to cracking . The firm fruits had comparatively high insoluble solids. Ideal types also indicated high total solids , pulp content , consistency and lycopene.
Evaluation of a few selected lines of pumpkin for local adaptability
(Kerala Agricultural University, 1987) Gopalakrishnan, T R; Peter, K V
Evaluation of a set of non-segragating and segragating populations of tomato for field resistance to bacterial wilt
(Department of Olericulture, College of Horticulture, Vellanikkara, 1985) Narayanankutty, C; Peter, K V
Evaluation of brinjal varieties for yield and resistance to bacterial wilt (Ralstonia solan acearum)
(Kerala Agricultural University, 2000) Gopalakrishnan, T R; Sally, K Mathew; Singh, P K; Peter, K V
Comparative performance of brinjal varieties and lines over five years revealed the superiority of SM-141 (Haritha) in terms of yield, quality and resistance to bacterial wilt (Ralstonia solanacearum). This culture produces long, light green and glossy cylindrical fruits, with a mean wilt incidence of 9.38 per cent. SM-141 has non-prickly stem and leaves with white flowers and has a mean productivity of 13.5 t ha"1. Considering its performance in the research stations and in farmers' fields, SM-141 has been released as Haritha for the State of Kerala
Evaluation of F4 and F6 generations of a set of clustered bell peppers
(Kerala Agricultural University, 1988) Girija Devi, T; Peter, K V