| Effects of drought stress on the yield and quality of malting barley |
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| DOI：10.7606/j.issn.1000-7601.2016.05.04 |
| Key Words: malting barley drought stress trait yield quality |
| Author Name | Affiliation | | BAO Qi-jun | Institute of Economic Crops and Beer Materials, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China | | PAN Yong-dong | Institute of Economic Crops and Beer Materials, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China | | ZHANG Hua-yu | Institute of Economic Crops and Beer Materials, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China | | LIU Xiao-ning | Institute of Economic Crops and Beer Materials, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China | | XU Yin-ping | Institute of Economic Crops and Beer Materials, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China | | HUO Ke-cang | Institute of Economic Crops and Beer Materials, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China | | CHEN Wen-qing | Institute of Economic Crops and Beer Materials, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China |
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| Abstract: |
| Influences of drought stress on growth period, agronomic characteristics, grain yield, quality and malt quality of barley variety Ganpi 6 were systematically investigated in this research. The results showed that under drought stress, all growth periods of Ganpi 6 were advanced, survival rate was reduced, tiller number was decreased, and plant height, ear length, panicle number per plant, grains per plant, seed weight per plant, grain weight per panicle, and seeds per ear were decreased. The yield of Ganpi 6 was decreased due to the drought stress that caused reduction of ear number, grains per spike and 1000-grain weight. In addition, ear number was affected the most, followed by k grains per spike, and the 1000-grain weight was least impacted. Drought stress increased the protein content, and decreased 1000 grain weight, starch content and the screening rate. However, the decreasing level of 1000 grain weight was higher than that of screening rate and starch content, and the decreasing level of starch content was the minimal. Also, drought stress decreased malt saccharifying time, diastatic power, viscosities, β-glucanase, fine powder extract and the thickness difference of powder, whereas increased coarse powder extract, α-amino nitrogen soluble nitrogen, protein, and kolbach index. |
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