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MORPHOLOGICAL CHARACTERIZATION AND EVALUATION OF JACK BEAN (Canavalia ensiformis (L.) DC.) GENOTYPES FOR YIELD AND QUALITY CHARACTERS

KrishiKosh

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Title MORPHOLOGICAL CHARACTERIZATION AND EVALUATION OF JACK BEAN (Canavalia ensiformis (L.) DC.) GENOTYPES FOR YIELD AND QUALITY CHARACTERS
 
Creator PRADEEPTHI LENKALA
 
Contributor Dr. K. RADHA RANI
 
Subject morphological characterization, genotypes in a randomized block design , correlation and path analysis studies
 
Description A field experiment was carried out on morphological characterization and evaluation of jack bean (Canavalia ensiformis (L.) DC.) genotypes for yield and quality characters at National Bureau of Plant Genetic Resources, Regional Station, Rajendranagar, during the period from August 2013 to February 2014. The study was conducted on 15 genotypes in a randomized block design with three replications. Highly significant differences were observed among 15 genotypes of Jack bean for all the 29 characters studied. Out of fifteen genotypes, PSR – 12202 for number of pods per plant, pod weight, marketable pod yield per plant, protein, magnesium, calcium, sodium, potassium and phosphorus content in pods while, IC – 512946 for plant height at last harvest, earliest flowering, fewer days to fruit set (for first formed flowers) and less number of days to first pod harvest whereas, IC – 541380 for number of primary branches per plant at first harvest, number of primary branches per plant at last harvest and number of seeds per pod were found to be superior based on their mean performance. Hence these genotypes may be further tested in different locations for their stable performance and thereafter may be selected as parental source for future breeding programmes. The characters viz., plant height at first harvest, number of primaries per plant at first harvest, plant height at last harvest, number of primaries per plant at last harvest, pod weight, number of pods per plant, number of seeds per pod, 100 seed
weight and pod yield per plant were observed with high genetic variability, high heritability in conjunction with high genetic advance as percent mean indicating the predominance of additive gene action on the expression of these traits and hence direct selection will be rewarding for improvement of these traits in Jack bean. The correlation and path analysis studies revealed that the traits like pod weight and number of pods per plant were considered as primary yield contributing components as they showed highly significant positive correlation with pod yield per plant and also exhibited highest direct positive effects on pod yield per plant and hence, direct selection based on these traits would result in improved pod yield. Considerable variation was found among the genotypes for morphological characters viz., growth habit (pole and bush), leaf density (sparse, intermediate and dense), stem colour (light green, purple and dark purple), flower colour (purple and white), pod shape (straight, intermediate and curved), pod colour (light green and green), pod beak length (short, medium and long), pod curvature (straight, curved and highly curved), pod surface (smooth and wrinkled) and seed colour (brown, reddish purple, white, greyish yellow and greyish orange). Whereas the traits like leaf vein colour, flower stalk, inflorescence emergence, flowering pattern and pod suture colour has no variability.
 
Date 2016-07-26T11:54:06Z
2016-07-26T11:54:06Z
2014-07
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/69895
 
Language en
 
Format application/pdf
 
Publisher Dr. Y.S.R. HORTICULTURAL UNIVERSITY