| Autor: |
Rani, Babita, Jatttan, Minakshi, Dhansu, Pooja, Madan, Shashi, Kumari, Nisha, Sharma, Kamal Dutt, Parshad, Jagdish, Kumar, Ashwani |
| Předmět: |
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| Zdroj: |
Cereal Research Communications; Mar2023, Vol. 51 Issue 1, p115-124, 10p |
| Abstrakt: |
A two-year pot experiment was conducted to explore the potential of arbuscular mycorrhizal fungus (Glomus mosseae) symbiosis under drought stress on tolerant (WH 1025) and sensitive (WH 1105) wheat varieties. Drought stress was created by withholding (stop water irrigation) irrigation at jointing stage and heading stage in wheat. Mycorrhizal inoculation increased osmotic potential (ψs) of both the varieties at jointing and heading growth stages, respectively. Under drought condition, WH 1105 showed higher per cent reduction in RWC, chlorophyll content, and gas exchange traits (Pn, gS, and E) as compared to WH 1025 at both the growth stages. But, the mycorrhizal inoculation enhanced these traits in both varieties under control (irrigated) as well as drought stress condition. Higher decrease in Fv/Fm values was noted under drought stress, whereas the application of AMF resulted less reduction and the variety WH 1025 had more chlorophyll fluorescence than WH 1105 under mycorrhizal inoculation and stress treatments. It was also noticed that mycorrhizal colonization enhanced mean iWUE (Pn/E) by 3.6% in WH 1025 and 0.11% in WH 1105, respectively. In addition to the physiology traits, grain yield is the prime target under stress conditions and it was noted that mycorrhizal symbiosis gave beneficial results under control as well as stress conditions. AMF symbiosis significantly enhanced the drought tolerance index of both the wheat varieties. Correlation analysis further revalidates the beneficial role of AMF under stress condition and found that all physiological traits showed higher correlation with grain yield. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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