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Relationship of Cob characters with grain morphology in maize (Zea mays, Poaceae).

Srinivas, T. and Bhashyam, M. K. and Nagin, Chand. and Sila, Bhattacharya and Sreedhara Murthy, S. and Narasimha, H. V. (1991) Relationship of Cob characters with grain morphology in maize (Zea mays, Poaceae). Economic Botany, 45 (4). pp. 503-510.

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Abstract

Twenty varieties of maize (Zea mays, Poaceae) were studied through 11 attributes in three to seven randomly selected plants of each variety with a view to understanding the effect of cob characters on technologically desirable grain qualities. Canonical discriminant analysis showed that productivity (determined by total grain weight~cob, cob diameter and average grain weighO was the most discriminating among varieties followed by round grains fraction (represented by whole top and middle fiat grains, number of rows and grain count~surface area), middle flat grains (composed of middle fiat grains and grain count~surface area) and shape of the cob (determined by shape index, total grain weight~cob and cob diameter), which accounted for 35.1, 18.3, 12.2, and 9.8% of the total variance, respectively. In the light of these results, tentative norms have been suggested to evolve maize varieties of superior technological properties and yet retain high productivity. A cylindrical cob of large diameter with highest number of grains~area and smallest possible number of rows together constituted an ideal combination to achieve the objectives. Such possibilities in the light of available information are discussed.

Item Type: Article
Uncontrolled Keywords: maize; Zea mays; maize cob, characters; maize grain, morphology
Subjects: 500 Natural Sciences and Mathematics > 10 Plants > 04 Plant Physiology
600 Technology > 08 Food technology > 22 Legumes-Pulses > 02 Maize
Divisions: Grain Science and Technology
Depositing User: Food Sci. & Technol. Information Services
Date Deposited: 28 Mar 2018 11:26
Last Modified: 05 Oct 2018 05:45
URI: http://ir.cftri.com/id/eprint/5209

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