Heat Tolerance Responses of Chickpea (Cicer arietinum L.) Genotypes in the Thermal Zone of Ethiopia, a Case of Werer Station

Mola, T and Alemayehu, S and Fikre, A and Ojiewo, C O and Alemu, K and Degefu, T (2018) Heat Tolerance Responses of Chickpea (Cicer arietinum L.) Genotypes in the Thermal Zone of Ethiopia, a Case of Werer Station. Ethiopian Journal of Crop Science, 6 (2). pp. 95-118. ISSN 2072-8506

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Abstract

Chickpea (Cicer arietinum L.) is an important cool season food legumes with indeterminate growth habit. The crop is valued for its nutritive seeds and use as animal feed in many developing countries. The productivity of the crop is constrained by several abiotic stresses, among which high temperature is one of the key determinants of crop. The present study was conducted to screen, evaluate and select Chickpea genotypes possessing high yield potential under heat stress condition at Werer Agricultural Research Center. The experiment was laid in RCBD of three replications using eighteen early maturing chickpea genotypes of ICRISAT in 2015. Two times planting (i. e. 23 Jan and 24 February) was done each on 4.8m2 plot with 30cm and 10 cm spacing, and data was determined on the two central rows. Growth period maximum temperature of >35OC, considered threshold for heat assessment, was sufficiently interfaced in both planting days. Combined analysis of variance revealed existence of highly significant differences among the tested genotypes for most of the agronomic traits. The top 3 best performing lines with extra early phenology were ICCV 09309 (1187 kg/ha), ICCV 10103 (1035 kg/ha) and ICCV 10108 (1014 kg/ha). Delayed planting posed more stress on the crop and yield, possibly the increasingly progressing temperature interfered beyond physiological adjustment of the crop. Heat tolerance indices like STI, TOL, SSI, MP and GMP calculated on the basis of grain yield, and genotypes ICCV-10102, ICCV-09309, DZ-2012-CK-0034 and DZ-2012-CK-0041 showed lower TOL and higher STI values indicating as tolerant genotypes relative to others.

Item Type: Article
Divisions: Research Program : East & Southern Africa
CRP: CGIAR Research Program on Grain Legumes and Dryland Cereals
Uncontrolled Keywords: Heat Tolerance, Chickpea Genotypes, Ethiopia, Chickpea, tolerance, phenology, Yield
Subjects: Mandate crops > Chickpea
Others > Genetics and Genomics
Others > Ethiopia
Depositing User: Mr Ramesh K
Date Deposited: 07 May 2018 09:29
Last Modified: 18 May 2018 09:01
URI: http://oar.icrisat.org/id/eprint/10638
Official URL:
Projects: Tropical Legumes III (TL III)
Funders: UNSPECIFIED
Acknowledgement: UNSPECIFIED
Links:

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