Is drought tolerance in maize (zea maysl.) cultivars atthe juvenile stage maintainedat the reproductive stage?

Bashir, N. and Mahmood, S. and Zafar, Z.U. and et al, . (2016) Is drought tolerance in maize (zea maysl.) cultivars atthe juvenile stage maintainedat the reproductive stage? Pakistan Journal of Botany, 48 (4). pp. 1385-1392.

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Abstract

Among several abiotic stresses, drought or water scarcity is a major constraint for crop production in many parts of the world. Six maize (Zea mays L.) cultivars; DTC, EV-77, EV-78, EV-79, Faisalabad mays, and 6621 were evaluated for drought tolerance at germination and seedling stages. Distilled deionized water was used as control but uniform drought stress was induced using 3, 6 and 9% of polyethylene glycol-6000 (PEG-6000) which correspond to osmotic potential of - 0.0466, -0.0759 and -0.0876 MPa, respectively. PEG influenced the germination and growth of the cultivars in a concentration dependent manner but the highest level of PEG induced more drastic decline for the various attributes studied. The cultivars showed significantly variable responses to different levels of PEG. The result of study clearly suggested variability of characters for drought tolerance among maize cultivars. Based on the pattern of variability for various attributes, 3 groups of cultivars can be classified. The cultivar 6621 had a consistent degree of sensitivity to drought in terms the reduction of various attributes studied....

Item Type:	Article
Uncontrolled Keywords:	Germination, Maize(Zea mays L.), PEG, Physiological indices, Polyethylene glycol, Water stress
Author Affiliation:	Institute of Pure and Applied Biology, Bahauddin Zakariya University, Multan 60800, Pakistan
Subjects:	Plant Protection
Divisions:	Maize
Depositing User:	Mr B Krishnamurthy
Date Deposited:	06 Dec 2016 07:41
Last Modified:	06 Dec 2016 07:41
URI:	http://eprints.icrisat.ac.in/id/eprint/14636

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