Screening drought tolerance criteria in maize

Author:

Farshadfar E.1,Sutka J.2

Affiliation:

1. 1 College of Agriculture, Razi University Kermanshah, Iran

2. 2 Agricultural Research Institute of the Hungarian Academy of Sciences Martonvásár, Hungary

Abstract

Six pure lines of maize were tested in a randomized complete block design with three replications under irrigated and rainfed conditions. Genetic variation was found between the genotypes for yield potential (Yp), stress yield (Ys), tolerance index (TOL), geometric mean productivity (GMP), harmonic mean (HM) and stress tolerance index (STI). Stress tolerance index was corrected using a correction coefficient (ki) and thus a modified stress tolerance index (MSTI) was introduced as the optimal selection criterion for drought-tolerant genotypes. The results of three-D plotting indicated that the most desirable genotype for irrigated and rainfed conditions was the genotype K1515, for non-stressed conditions K18 and for stress conditions K104/3, K760/7 and K126/10.

Publisher

Akademiai Kiado Zrt.

Subject

Agronomy and Crop Science

Reference17 articles.

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2. Vasal, D. K., Cordona, H. S., Beck, D. L., Edmeades, G. O. 1997: Choices among breeding procedures and strategies for developing stress-tolerant maize germplasm. Proceeding of a Symposium. March 25-29. CIMMYT, Mexico. pp. 336-347.

3. Zahravi, M. 1999: Genetic analysis of drought tolerance in wheat. M. Sc. Thesis. Razi University, Kermanshah, Iran.

4. Improving commonbean performance under drought stress;A. Kristin;Crop Sci.,1997

5. Maroufi, A. 1998: Chromosome localization of the genes controlling drought tolerance indices. M. Sc. Thesis. Razi University, Kermanshah, Iran.

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