低磷胁迫对8个青稞品种苗期关键农艺性状的影响  

Low Phosphorus Stress Affects Key Agronomic Traits in Seedlings of 8 Hulless Barley Varieties

作　　者：安立昆 王子傲 崔永梅 白羿雄 海琪 娘毛吉 吴昆仑 AN Li-kun;WANG Zi-ao;CUI Yong-mei;BAI Yi-xiong;HAI Qi;NIANG Mao-ji;WU Kun-lun(Academy of Agriculture and Forestry Sciences,Qinghai University,Laboratory for Research and Utilization of Qinghai Tibet Plateau Germplasm Resources,Qinghai Key Laboratory of Hulless Barley Genetics and Breeding,Qinghai Subcenter of National Hulless Barley Improvement,Xining 810016,PRC;College of Agriculture and Animal Husbandry,Qinghai University,Xining 810016,PRC;College of Eco-Environmental Engineering,Qinghai University,Xining 810016,PRC)

机构地区：[1]青海大学农林科学院,青藏高原种质资源研究与利用实验室,青海省青稞遗传育种重点实验室,国家麦类改良中心青海青稞分中心,青海西宁810016 [2]青海大学农牧学院,青海西宁810016 [3]青海大学生态环境工程学院,青海西宁810016

出　　处：《湖南农业科学》2025年第2期1-6,共6页Hunan Agricultural Sciences

基　　金：青海省创新平台建设专项-青海省青稞遗传与重点实验室(2023-1_5)。

摘　　要：为了明确低磷条件下青稞苗期的农艺性状特点,采用苗期水培方法对8个青稞品种在低磷胁迫下的农艺性状进行检测与分析,并对其耐低磷能力进行评价。结果表明:低磷胁迫下,所有青稞品种的株高、根长、植株鲜重、植株干重、根鲜重和根干重与正常培养条件下的各指标相比均显著下降,但不同青稞品种的根冠比变化表现各异。通过对青稞在正常和低磷条件下各农艺性状进行综合分析发现,根干重、株高和植株鲜重是反映青稞苗期耐低磷能力的重要农艺性状,其中根干重是筛选耐低磷青稞最重要的指标。隶属函数分析结果表明,青稞耐低磷能力表现为紫康青>黄青1号>肚里黄>昆仑14>喜马拉雅22号>洛隆宗>特邬>墨竹青稞。To reveal the agronomic traits of hulless barley seedlings under low phosphorus stress,we measured the agronomic traits of seedlings in hydroponic culture and under low phosphorus for 8 hulless barely varieties.Furthermore,each hulless barely variety was evaluated for its tolerance to low phosphorus.The results showed that under low phosphorus stress,all hulless barley varieties showcased significant decreases in plant height,root length,plant fresh weight,plant dry weight,root fresh weight,and root dry weight compared with those of the same hulless barley varieties under normal culture conditions,while the root-to-shoot ratio demonstrated no significant difference between normal culture conditions and low phosphorus stress.A comprehensive analysis of agronomic traits under different cultivation conditions revealed that root dry weight,plant height,and plant fresh weight could be used as crucial indicators to evaluate the low phosphorus tolerance.Among them,root dry weight was the most important agronomic trait for screening hulless barley varieties with low phosphorus tolerance.The subordinate function analysis showed that the low phosphorus tolerance of the eight varieties of hulless barley followed the trend of'Purple Kangqing'>'Huangqing 1'>'Dulihuang'>'Kunlun 14'>'Himalaya 22'>'Luolongzong'>'Tewu'>'Mozhu hulless barely'.

关 键 词：青稞 低磷胁迫 苗期 农艺性状 

分 类 号：S512.3[农业科学—作物学]