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GENETIC IMPROVEMENT OF BAMBARA GROUNDNUT (Vigna subterranea (L.) Verdc) THROUGH MUTATION BREEDING

KrishiKosh

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Title GENETIC IMPROVEMENT OF BAMBARA GROUNDNUT (Vigna subterranea (L.) Verdc) THROUGH MUTATION BREEDING
 
Creator CHITTI, BHARATKUMAR
 
Contributor Nandini, R
 
Subject null
 
Description Bambara groundnut (Vigna subterrnea L. (Verdc.) termed as a potential crop of
future is said to have its origin in Africa. It is considered to be a completely balanced
food rich in protein (25-28%) and quantitatively superior to other pulses due to essential
amino acids methionine and lysine. The present investigation was undertaken to utilize
mutation breeding to genetically improve the self pollinated underexploited protein rich
crop. The objectives of the study include determination of LD50 value, genotypic
sensitivity, effectiveness and efficiency of EMS and isolation of economically important
lines in two varieties of Bambara groundnut SB-42 and S-165A.The seeds were treated
with EMS concentrations ranging from 0.1 to 0.5 per cent. EMS concentration of 0.3 per
cent was determined to be LD50 value for both the varieties. Comparing the mutagenic
effect on various biological parameters S-165A was more sensitive than SB-42. At 0.3
per cent EMS concentration a higher number of chlorophyll mutations were recorded
compared to other treatments. Morphological mutations in SB-42 were identified to be
more than in the variety S-165A.In M1 generation a negative shift in plant height was
observed per cent mean over control in all concentrations of EMS. In M2 generation, days
to flowering, number of pods per plant, pod yield per plant, seed yield per plant and
shelling percentage exhibited a higher per cent increase over control. Based on Chisquare
test for yellow mosaic virus disease resistance, the resistance was governed by
single recessive gene and mutant families F-91, F-94, F-35, F-92, F-105 in SB-42 and F-
9,F-86,F-1, F-7 and F-19 in S-165A families exhibited tolerance to yellow mosaic virus
disease under natural conditions. Variability for characters like number of plants per
plant, pod yield per plant and seed yield per plant in M3 generation was higher and
mutant families F-62, F-82, F-105, F-35 in SB-42 and F-7, F-14, F-9, F-1 in S-165A
recorded high yield, high protein and high methionine content.
 
Date 2017-08-26T04:58:58Z
2017-08-26T04:58:58Z
2015-12-12
 
Type Thesis
 
Identifier Th-11292
http://krishikosh.egranth.ac.in/handle/1/5810029733
 
Language en
 
Format application/pdf
 
Publisher UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU