The Effects of High Temperature Stress on Some Agronomic Characters in Cotton. | [Pakistan Journal of Botany • 2017]

Author(s):

1. REMZI EKİNCİ: Department of Field Crops, Faculty of Agriculture, University of Dicle,Diyarbakır,Turkey

2. SEMA BASBAĞ: Department of Field Crops, Faculty of Agriculture, University of Dicle,Diyarbakır,Turkey

3. EMINE KARADEMIR: Department of Field Crops, Faculty of Agriculture, University of Siirt,Siirt,Turkey

4. ÇETIN KARADEMIR: Department of Field Crops, Faculty of Agriculture, University of Siirt,Siirt,Turkey

Abstract:

High temperature is one of the abiotic stress causing morphological, physiological, biochemical and molecular changes on plant growth and productivity. One hundred and sixty cotton genotypes obtained from genetic stocks was evaluated for high temperature tolerance based on some agronomic characters under field and controlled conditions. Genotypes showed differences for all investigated characters. Plant height, node number and HNR ranged from 68.38-136.45 cm, 18.22-30.10 number.plant-1, 2.89-6.31 (HNR) respectively. Maximum and minimum values in terms of number of sympodial branches, boll abscission at first position, number of seed and seed-cotton yield changed from 11.09-24.42 number.plant-1; 4.17%-20.80%; 20.39-44.11 number.boll-1 and 5.74-60.30 gr.plant-1 respectively. Differences among genotypes were statistically significant for all characters under high temperature stress conditions. High temperature stress was declined the cotton plant development, the decline are important for cotton breeders and cotton breeding programs on the genotypes less affected from high temperature.

Page(s): 503-508

DOI: DOI not available

Published: Journal: Pakistan Journal of Botany, Volume: 49, Issue: 2, Year: 2017

Keywords:

abiotic stress , Cotton , High temperature stress

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