Planta (2017) 246:509–524 DOI 10.1007/s00425-017-2698-4 ORIGINAL ARTICLE Pre-drought priming sustains grain development under post- anthesis drought stress by regulating the growth hormones in winter wheat (Triticum aestivum L.) 1,2 1 1 1 1 • • • • • Muhammad Abid Yuhang Shao Sixi Liu Feng Wang Jingwen Gao 1 1 1 • • Dong Jiang Zhongwei Tian Tingbo Dai Received: 25 January 2017 / Accepted: 13 April 2017 / Published online: 19 May 2017 Springer-Verlag Berlin Heidelberg 2017 Abstract favorable levels of growth hormones under post-anthesis Main conclusion Drought stress during grain ﬁlling is drought conditions, the plants of a drought-sensitive the most yield-damaging to wheat. Pre-drought priming (Yangmai-16) and drought-tolerant (Luhan-7) wheat cul- facilitated the wheat plants to sustain grain develop- tivar were exposed to a moderate drought stress during ment against the post-anthesis drought stress by mod- tillering (Feekes 2 stage) for priming, and then, a subse- ulating the levels of growth hormones. quent severe drought stress was applied from 7 to 14 days after anthesis. The results showed that drought-stressed Post-anthesis drought stress substantially reduces grain plants of both cultivars showed a decline in ﬂag leaf water yield in wheat (Triticum aestivum L.) due to impaired
Planta – Springer Journals
Published: May 19, 2017
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