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	Drought tolerance in popular sunflower hybrids at seedling stage
	Praveen, H. G.; Nagarathna, T. K.; Reddy, Y. A. Nanja
通讯作者	Praveen, HG (corresponding author), Univ Agr Sci, GKVK, Bengaluru 560065, India.
来源期刊	INDIAN JOURNAL OF AGRICULTURAL SCIENCES
ISSN	0019-5022
EISSN	2394-3319
出版年	2021
卷号	91 期号:5 页码:689-694
英文摘要	Drought is a major abiotic stress coupled with high temperature that limits the crop productivity in arid and semi-arid regions. Productivity of sunflower under moisture stress is primarily determined by seed germination and the seedling vigour for appropriate crop stand. Screening hybrids for moisture stress and high-temperature tolerance under field condition has uncertainties of uncontrolled environmental conditions and interaction of biotic and other abiotic stresses. Hence, in the present experiment, 17 popular hybrids were evaluated for moisture stress tolerance at the seedling stage using PEG-induced osmotic stress and; for high-temperature tolerance using temperature induction response (TIR) technique. The study revealed that root growth was affected higher as compared to the shoot growth in both the experiments. The shoot growth was affected higher due to high temperature as compared to the PEG-induced stress. The hybrids NDSH-1012, PSH-1962, RSFH-130, and GK-202 were tolerant to PEG induced moisture stress while, the hybrids KBSH-41, KBSH-44, KBSH-53, and SB-207 were tolerant to high temperature-induced stress. The hybrids, DRSH-1, KBSH-1 and GK-2009 were moderately tolerant for both the stresses. These hybrids are suitable for drought tolerance at seedling level. This study concludes that the evaluation of hybrids for combined stresses (drought and high temperature) would be appropriate than the individual stress in sunflower. Furthermore, hybrids tolerant to stresses at seedling level should be evaluated at later growth stages for confirmation of drought/ heat tolerance and suitable for rainfed cultivation.
英文关键词	Osmotic stress Recovery growth Seedling survival TIR approach
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000677716000029
WOS关键词	GENOTYPES ; STRESS ; PLANTS ; L.
WOS类目	Agriculture, Multidisciplinary
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363576
作者单位	[Praveen, H. G.; Nagarathna, T. K.; Reddy, Y. A. Nanja] Univ Agr Sci, GKVK, Bengaluru 560065, India; [Nagarathna, T. K.] Govt India, Minist Agr & Farmers Welf, Protect Plant Varieties & Farmers Rights Author, NASC Complex, New Delhi, India
推荐引用方式 GB/T 7714	Praveen, H. G.,Nagarathna, T. K.,Reddy, Y. A. Nanja. Drought tolerance in popular sunflower hybrids at seedling stage[J],2021,91(5):689-694.
APA	Praveen, H. G.,Nagarathna, T. K.,&Reddy, Y. A. Nanja.(2021).Drought tolerance in popular sunflower hybrids at seedling stage.INDIAN JOURNAL OF AGRICULTURAL SCIENCES,91(5),689-694.
MLA	Praveen, H. G.,et al."Drought tolerance in popular sunflower hybrids at seedling stage".INDIAN JOURNAL OF AGRICULTURAL SCIENCES 91.5(2021):689-694.