二棱青稞品系群体动态及农艺性状分析  

Analysis of Agronomic Traits and Population Dynamics of Two-Rowed Highland Barley Lines

作　　者：白婷 周珠扬[2] 靳玉龙 朱明霞 强小林[2] BAI Ting;ZHOU Zhuyang;JIN Yulong;ZHU Mingxia;QIANG Xiaolin(Institute of Agricultural Product Development and Food Science,Tibet Academy of Agricultural and Animal Husbandry Sciences,Lhasa 850000,China;Agricultural Research Institute,Tibet Academy of Agricultural and Animal Husbandry Sciences,Lhasa 850000,China)

机构地区：[1]西藏自治区农牧科学院农产品开发与食品科学研究所,西藏拉萨850000 [2]西藏自治区农牧科学院农业研究所,西藏拉萨850000

出　　处：《河南农业科学》2019年第2期35-39,共5页Journal of Henan Agricultural Sciences

基　　金：国家大麦青稞产业技术体系项目(CARS-05)

摘　　要：以六棱青稞品种藏青2000、藏青25为对照,研究QTB11、QTB13、QTB16、QTB17、QTB23、QTB24、QTB25等7个二棱青稞品系的群体动态及农艺性状,为二棱青稞育种的可行性研究提供理论依据。结果表明,二棱青稞品系QTB16、QTB17、QTB25基本苗数较高,均显著高于藏青2000,与藏青25差异不显著,其余二棱青稞品系均与2个对照品种无显著差异;大部分二棱青稞品系的分蘖力和有效分蘖率均高于对照,分蘖力最高的为QTB11,有效分蘖率最高的为QTB13,均显著高于其他二棱青稞品系和对照品种;二棱青稞品系QTB11、QTB24虽分蘖能力强,但分蘖成穗差。二棱青稞品系小穗数、穗粒数、穗粒质量均显著低于六棱青稞品种,千粒质量由高到低表现为QTB17>QTB25>QTB16>藏青2000>QTB24>QTB23>QTB13>藏青25>QTB11。二棱青稞品系籽粒产量均显著低于对照,影响二棱青稞品系产量的因子主要为小穗数、穗粒数及穗粒质量。在二棱青稞品系株高与对照品种藏青2000、藏青25差异均不显著(除QTB25与藏青25差异显著外)的情况下,二棱青稞品系饲草产量均显著高于六棱青稞品种,最高增幅可达94.9%。The population dynamics and agronomic traits of 7 two-rowed highland barley lines including QTB11,QTB13,QTB16,QTB17,QTB23,QTB24 and QTB25 were studied with Zangqing 2000 and Zangqing 25 as controls,so as to provide theoretical basis for the feasibility study of two-rowed highland barley breeding.The results showed that the number of basic seedlings of two-rowed highland barley lines QTB16,QTB17 and QTB25 were higher,which were significantly higher than that of Zangqing 2000,but there was no significant difference from Zangqing 25,the other remaining lines were not significantly different from controls.The tillering ability and effective tillering rate of most two-rowed highland barley lines were relatively higher than those of six-rowed highland barley.QTB11 had the highest tillering ability,and QTB13 had the highest effective tillering rate,both of which were significantly higher than the other highland barley varieties (lines).Although the tillering ability of QTB11 and QTB24 was strong,the effective tillering rate was low.The spikelet number,grains number per spike,grains weight per spike of two-rowed highland barley lines were all significantly lower than those of six-rowed highland barley.The order of thousand seed weight was QTB17>QTB25>QTB16>Zangqing 2000>QTB24>QTB23>QTB13>Zangqing 25>QTB11.The grain yields of the two-rowed highland barley lines were significantly lower than controls,and correlation analysis results showed that the main influence factors of yield were spikelet number,grains number per spike and grains weight per spike.There was no significant difference between two-rowed and six-rowed highland barley in plant height (except between QTB25 and Zangqing 25),but forage yields were remarkably higher than those of controls,and the highest growth rate could reach 94.9%.

关 键 词：二棱青稞 农艺性状 群体动态 产量 

分 类 号：S512.3[农业科学—作物学]