Evaluation of Trait-based and Empirical Selections for Drought Resistance at ICRISAT Centre, Patancheru, Andhra Pradesh, India

    Nigam, S N and Chandra, S and Manohar, B and Talwar, H S and Reddy, A G S and Kanchi, R (2003) Evaluation of Trait-based and Empirical Selections for Drought Resistance at ICRISAT Centre, Patancheru, Andhra Pradesh, India. In: Breeding of drought-resistant peanuts. Proceedings of a Collaborative Review Meeting, 25-27 Feb. 2002, Hyderabad, Andhra Pradesh, India.

    [img]
    Preview
    		 PDF - Published Version
    Download (93kB) | Preview

    Abstract

    The performance of 192 groundnut lines selected following trait-based and empirical selection approaches was evaluated in Patancheru, Andhra Pradesh, India, during 2000 rainy season and 2000/01 post-rainy seasons. In 2000 under irrigated conditions, the genetic variation for kernel yield, harvest index (HI), transpiration efficiency (TE) and transpiration were highly significant. The top 20 genotypes (kernel yield basis) consisted of 11 trait-based and 9 empirical selections. The variation between the genotypes and the parent with the best parent (ICGS 76) was not significant for all traits except transpiration, for which 4 genotypes showed superiority over ICGS 76. Under rainfed conditions, the top 20 genotypes consisted of 12 trait-based and 8 empirical selections. The variation between these genotypes and ICGS 76 was not significant except for TE, for which 4 genotypes were inferior to ICGS 76. In 2000/01 under irrigated conditions, the 20 top genotypes were not superior to ICGS 76 for all traits except HI, for which 7 genotypes (3 trait-based and 4 empirical selections) were superior to ICGS 76. Under mid-season drought conditions (irrigation was withheld from 40 to 80 days after sowing), the top 20 genotypes (12 trait-based and 8 empirical selections) did not significantly vary from ICGS 76 for all traits except HI, for which 7 genotypes showed superiority. Under all conditions, no selection method showed superiority in the selection of genotypes for kernel yield, HI, TE and transpiration. The combined analysis over all experiments indicated that 3 trait-based selections and one empirical selection for HI, and one trait-based genotype for transpiration showed significant gains ever ICGS 76

    Item Type: Conference or Workshop Item (Paper)
    Divisions: UNSPECIFIED
    CRP: UNSPECIFIED
    Subjects: Mandate crops > Groundnut
    Others > Agriculture-Farming, Production, Technology, Economics
    Depositing User: Mr Sanat Kumar Behera
    Date Deposited: 29 Oct 2011 06:56
    Last Modified: 29 Oct 2011 06:56
    URI: http://oar.icrisat.org/id/eprint/3330
    Acknowledgement: UNSPECIFIED
    Links:
    View Statistics

    Actions (login required)

    View Item View Item
    OAR@ICRISAT is powered by EPrints 3 which is developed by the School of Electronics and Computer Science at the University of Southampton. More information and software credits.