Parental Drought and Defoliation Effect on Yield, Grains Biochemical Aspects and Drought Performance of Sorghum Progeny
Journal Title: Журнал ÑтреÑÑ-физиологии и биохимии - Year 2013, Vol 9, Issue 1
Abstract
This study was designed to evaluate the effect of drought stress and drought with defoliation on yield parameters of three sorghum varieties (Giza 15, Dorado and Hybrid 113). Also, the effect of these parental stress treatments on drought performance of progeny of the most drought tolerant variety was investigated. Application of drought stress in the vegetative stage non significantly affected panicles number, grain yield and harvest index of all cultivars. Drought stress in the reproductive stage of Giza 15 and Hybrid 113 cultivars caused a two fold increase in length of lateral branch and panicles number. However, grain yield and total panicles weight were significantly reduced in all cultivars due to this stress. Application of drought with defoliation in the vegetative stage reduced shoot and straw weights, and grain yield in sorghum in comparison with drought stress only. Protein-N and polysaccharides content were decreased in parent grains in response to water stress. The stress intensity index (SII) of progeny from drought- subjected parents was about 30-fold greater than SII of progeny from control parents. Further, SII of progeny from parents exposed to drought stress in the reproductive stage was higher than the SII of progeny from parents subjected to drought stress in the vegetative stage . A strong negative correlation appeared between the stress intensity index of the progeny and polysaccharides content of parent grains. Based on our research parental defoliation did not improve the drought resistance of sorghum progeny.
Authors and Affiliations
A. Ibrahim, O. El-Shahaby, S. Abo-Hamed, M. Younis
Keywords
Related Articles
- EP ID EP130401
- DOI -
- Views 111
- Downloads 0
Effect of PEG-6000 Imposed Water Deficit on Chlorophyll Metabolism in Maize Leaves
Drought stress is one of the major abiotic constraint limiting plant growth and productivity world wide. The current study was undertaken with the aim to investigate the effect of water deficit imposed by PEG-6000, on ch...
Evaluation of Salt Tolerance (NaCl) in Tunisian Chili Pepper (Capsicum frutescens L.) on Growth, Mineral Analysis and Solutes Synthesis
Every year, more and more land becomes non-productive due to salinity which adversely affects the productivity and quality of most crops that is why salinity becomes a concern to be studied more to understand the mechani...
Study of photosynthesis process in the presence of low concentrations of clomazone herbicide in tobacco (Nicotiana tabacum)
The effect of chemical residues of clomazone on photosynthetic processes has been studiedby using several low concentrations of the herbicide (0, 1, 0.1, 0.01, 0.001, 0.0001 and 0.00001) µM and seedlings of two varie...
Assessment of Salinity-Induced Antioxidative Defense System in Colubrina asiatica Brongn
The present study examined the salinity-induced oxidative damage and differential response of enzymatic and nonenzymatic antioxidants of [i]Colubrina asiatica[/i]. Acceleration of catalase and peroxide production in leav...
Role of ascorbic acid against pathogenesis in plants
Plants vary considerably in their physiological response to various kinds of environmental stress. To prevent damage caused by pathogenic attack and to acclimate to change in their environment, plants have evolved...