Promising parental lines for the development of high water-use efficient groundnut varieties.

Book Title: NA
Year Published: 2005
Month Published: NA
Author: Chuni, Lal ; Rathnakumar, A. L. ; Hariprasanna, K. ; Gor, H. K. ; Chikani, B. M.
Book Group Author: NA

A study was conducted to determine the genetic control of water use efficiency (WUE) related traits in groundnut. Six genotypes (Chico, CSMG 84-1, ICG 4747, ICGV 86031, TAG 24 and TMV 2 NLM) were crossed in a full diallel mating design, resulting in 15 F1s and 15 reciprocals, in the rainy season of 2003. The 30 hybrids were evaluated along with their parents at Junagadh, Gujarat, India, during the summer of 2004. Data were recorded for carbon isotope discrimination (Δ13C), oxygen isotope enrichment (Δ18O), specific leaf area (SLA), SPAD chlorophyll meter reading (SCMR), harvest index (HI), total dry matter production (TDM) and fodder yield (FY). Substantial genetic variability existed among the parental lines and F1s for the traits studied. All the WUE related traits were mainly under the control of additive gene action, suggesting that they can be selected in early generations. TMV 2 NLM (for SCMR, SLA and Δ13C) and ICGV 86031 (for SCMR, SLA and Δ18O) were identified as the best general combiners for most WUE related traits. Hence, these genotypes should be used in future breeding programmes at improving WUE and yield in groundnut. The crosses identified with high specific combining ability effects for these traits should be advanced further to retrieve transgressive segregants in later generations.

Pages: 8 - 10
URL: http:////,ip,url,cpid&custid=s4640792&db=lah&AN=20053201335&site=ehost-live
Volume: NA
Number: 25
Journal: International Arachis Newsletter
Journal ISO: NA
Organization: NA
Publisher: NA
ISSN: 1010-5824

chlorophyll, crop yield, diallel analysis, dry matteraccumulation, general combining ability, genetic effects, geneticregulation, genetic variation, groundnuts, harvest index, hybrids, leafarea, plant water relations, specific combining ability, water useefficiency, Gujarat, India, Arachis hypogaea, Arachis, Fabaceae,Fabales, dicotyledons, angiosperms, Spermatophyta, plants, India, SouthAsia, Asia, Developing Countries, Commonwealth of Nations, Field Crops(FF005) (New March 2000), Forage and Fodder Crops (FF007) (New March2000), Plant Breeding and Genetics (FF020), Plant Water Relations (FF062)

Source: EBSCO
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