| 何鹏旭,闫妍,湛潇潇,张震欢,吴银盈,朱致速,崔洪瑞,张宏,汪军成,李葆春,杨轲,司二静,孟亚雄,马小乐,王化俊,姚立蓉.基于产量相关性状的大麦种质干旱适应性分析[J].干旱地区农业研究,2024,(5):1~13 |
| 基于产量相关性状的大麦种质干旱适应性分析 |
| Drought adaptability analysis of barley germplasm based on yield\|related traits |
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| DOI：10.7606/j.issn.1000-7601.2024.05.01 |
| 中文关键词: 大麦 干旱适应性 产量相关性状 灌水条件 种质筛选 |
| 英文关键词:Hordeum vulgare L. drought adaptability yield\|related traits irrigation condition germplasm screening |
| 基金项目:国家现代农业产业技术体系（CARS-05-04B-2）；甘肃省高等学校产业支撑计划项目（2021CYZC-12）；国家自然科学基金（31860377）；甘肃省自然基金重点项目（20JR10RA507）；甘肃农业大学伏羲青年英才计划（Ganfx-03Y06, GAUfx-04Y011）；甘肃省科技重大专项（17ZD2NA016）；干旱生境作物学国家重点实验室开放基金（GSCS-2021-05,GSCS-2016-3）；甘肃省优秀研究生“创新之星”项目(2022CXZXB-028)；甘肃省科技重大专项(17ZD2NA016)；甘肃农业大学SIETP项目（202401053） |
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| 中文摘要: |
| 于2019—2021年，通过测定62份大麦（Hordeum vulgare L.）种质在不同灌水条件下的产量相关性状数据，分析了大麦7个产量相关性状与灌水的相关性。结果表明，z1450066w的生育期较短，正常灌水条件下为82.67 d，干旱胁迫下为65.33 d；TRADI70w的穗长较长，正常灌水条件下为7.82 cm，干旱胁迫下为8.11 cm；ZDM5458的产量较高，正常灌水条件下为397.93 g·m-2，干旱胁迫下为309.52 g·m-2，且3个试验年份均呈增产趋势。依据62份种质在干旱胁迫下产量相关性状适应能力的不同，将其分为5类，I类的有效分蘖、千粒重性状表现较好，II类和III类分别在穗长和株高性状上表现较好，IV类穗粒数、产量性状表现较好，V类的生育期性状表现较好。与正常灌水相比，干旱胁迫下大麦生育期、株高、穗长、有效分蘖、穗粒数和产量分别降低14.25%、11.37%、1.64%、5.68%、7.61%和27.98%。正常灌水下，穗长与株高、千粒重均呈极显著正相关关系，有效分蘖与穗长、生育期和穗粒数分别呈极显著负相关、极显著正相关和显著负相关关系，千粒重、株高与产量均呈极显著正相关关系；干旱胁迫下，穗长与穗粒数、千粒重和产量分别呈显著负相关、极显著负相关和极显著正相关关系，有效分蘖与株高、千粒重分别呈极显著负相关和极显著正相关关系，生育期与千粒重呈极显著正相关关系。同时，筛选出4份抗旱的大麦种质（ZDM5458，GERTROV，ZDM5430，G0401018K-1），其中干旱胁迫下ZDM5458产量较高，GERTROV和ZDM5430穗粒数较多，G0401018K-1有效分蘖较多。 |
| 英文摘要: |
| In 2019-2021, the yield\|related trait data of 62 barley germplasm resources under different irrigation conditions were analyzed to examine the correlation between barley yield\|related traits and irrigation. The results showed that the growth period of z1450066w was relatively short, with 82.67 days under normal irrigation condition and 65.33 days under drought stress. The ear length of TRADI70w was relatively long, with a normal irrigation value of 7.82 cm and a drought stress value of 8.11 cm. ZDM5458 had a high yield, with 397.93 g·m-2 under normal irrigation condition and 309.52 g·m-2 under drought stress showing a trend of increased yield in all three experimental years. Based on the different adaptive ability of 62 germplasm samples for yield\|related traits under drought stress, they were categorized into five classes. Class I showed better performance in effective tillering and thousand kernel weight traits under drought stress. Classes II and III showed better performance in spike length and plant height traits, respectively. Class IV showed better performance in kernels per spike and yield traits, and Class V showed better growth stage traits. Barley growth stages, plant height, spike length, effective tillering, kernels per spike and yield were reduced by 14.25%, 11.37%, 1.64%, 5.68%, 7.61% and 27.98%, respectively, under drought stress compared with normal irrigation. Under normal irrigation, spike length was highly significantly with plant height and thousand kernel weight. Effective tillering was highly significantly negatively correlated, highly significantly positively correlated, and significantly negatively correlated with spike length, growth stages and kernels per spike, respectively. Thousand kernel weight, plant height and yield were all highly significant and positively correlated. Under drought stress, spike length was significantly negatively correlated, highly significantly negatively correlated, and highly significantly positively correlated with kernels per spike, thousand kernel weight and yield, respectively. Effective tillering showed highly significant negative and highly significant positive correlation with plant height and thousand kernel weight, respectively. Growth stage showed highly significant positive correlation with thousand kernel weight. Meanwhile, four drought\|resistant barley germplasm resources（ZDM5458, GERTROV, ZDM5430, G0401018K-1）were screened. ZDM5458 had higher yield under drought stress, GERTROV and ZDM5430 had higher number of kernels per spike under drought stress, and G0401018K-1 had higher effective tillering under drought stress. |
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