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Within-line Genetic Variation for Quantitative Characters and SSRs in Long-time Maintained Inbreds in Pearl Millet [Pennisetum glaucum (L.) R. Br.]

OAR@ICRISAT

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Relation http://oar.icrisat.org/6630/
http://www.globalsciencebooks.info/JournalsSup/12EJPSB_6_SI2.html
 
Title Within-line Genetic Variation for Quantitative Characters and SSRs in Long-time Maintained Inbreds in Pearl Millet [Pennisetum glaucum (L.) R. Br.]
 
Creator Gupta, S K
Nepolean, T
Rai, K N
Hash, C T
Bhattacharjee, R
Rathore, A
 
Subject Millets
Genetics and Genomics
 
Description Six maintainer (B-) and restorer (R-) lines each from ICRISAT’s pearl millet hybrid parental line breeding program were investigated for within-line genetic variation for quantitative characters and simple sequence repeats (SSRs). Thirty two progenies of each inbred line were evaluated under two contrasting seasons and observed for 5 quantitative characters, and for 20 SSRs. Some B- and R- lines had small but significant within-line genetic variation for certain traits. Higher number of significant differences for within-line variation observed among progenies for B-lines (48%) than for R-lines (33%) indicated that ear-to-row procedure of line maintenance was more effective than bulking the phenotypically similar plants, for maintaining the genetic uniformity in inbreds. Amongst B-lines, ‘ICMB 89111’ had the maximum within-line variation for both quantitative characters and SSR markers. Amongst R-lines, ‘IPC 802’ and ‘IPC 909’ had within-line variation for maximum of 4 quantitative characters. Wide range of variability was observed for all the characters in both B- and R- lines, but genotypic coefficient of variation (GCV) was very low. SSRs were able to detect low level of residual heterozygosity in some of the inbreds
 
Publisher Global Science Books
 
Date 2012
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Rights —
 
Identifier http://oar.icrisat.org/6630/1/EJPSB_6%28SI2%29109-2012.pdf
Gupta, S K and Nepolean, T and Rai, K N and Hash, C T and Bhattacharjee, R and Rathore, A (2012) Within-line Genetic Variation for Quantitative Characters and SSRs in Long-time Maintained Inbreds in Pearl Millet [Pennisetum glaucum (L.) R. Br.]. The European Journal of Plant Science and Biotechnology, 6 (s2). pp. 109-113. ISSN 1752-3842