Seed Yield and Yield Components of Four Festuca L. Species in Alpine Region

doi:10.11733/j.issn.1007-0435.2011.03.016

Acta Agrestia Sinica ›› 2011, Vol. 19 ›› Issue (3): 458-462.DOI: 10.11733/j.issn.1007-0435.2011.03.016

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Seed Yield and Yield Components of Four Festuca L. Species in Alpine Region

LIANG Guo-ling, YAN Hong-bo, ZHOU Qing-ping, LIU Wen-hui

Qinghai Academy of Animal Science and Veterinary Medicine, Xining, Qinghai Province 810016, China

Received:2010-12-29 Revised:2011-04-06 Online:2011-06-15 Published:2011-06-15

高寒地区羊茅属4种牧草种子产量及构成因子的研究

梁国玲, 颜红波, 周青平, 刘文辉

青海省畜牧兽医科学院, 青海西宁, 810016

通讯作者: 颜红波,E-mail:yanhongbomail@163.com
作者简介:梁国玲(1978- ),女,河南浙川人,硕士,助理研究员,主要从事牧草栽培育种方面研究,E-mail:qhliangguoling@163.com
基金资助:
农业部“青藏高原牧草种质资源保护利用”(70401);现代农业产业技术体系建设专项资金;公益性行业专项“青海牧区优质高效饲草生产利用技术研究与示范”(201003023);青藏高原特有草种资源开发及应用国家地方联合工程实验室资助

Abstract

Abstract: The seed yield and yield components of 4 Festuca L.species were compared to provide a reference for seeds production in Alpine region.Results showed that the relationships between the seed yield of 4 Festuca L.species and growth years are presented by y=a+bx+cx².Seed yield of F.sinensis cv.Qinghai is the highest(368.0 kg·hm^-2) among tested species.The second is F.ryloviana and F.kirilovii.Seeds production of F.fascinate is the lowest(72.3 kg·hm^-2) among tested species.There are significant positive correlations between seed yields and seed numbers per inflorescence,spikelet per inflorescence,seed weight per inflorescence,1000-grain weight,length of seed as well as length of inflorescence.Spikelet per inflorescence has a greater effect on seed yields,and is a mainly factor of seed yields.

Key words: Festuca L., Seed yield, Seed yield components

摘要： 在高海拔区对羊茅属(Festuca L.)4种牧草的种子产量及其产量构成因子进行比较研究,以期为高寒地区羊茅属牧草种子生产提供理论依据。结果表明:4种牧草的种子产量随生长年限的增加表现出y=a+bx+cx²变化趋势,其中青海中华羊茅(Festucasinensis Keng cv.Qinghai)种子生产性能在供试材料中表现最好(平均产量368.0kg·hm^-2),其次为西北羊茅(F.ryloviana Rererd.)和毛稃羊茅(F.kirilovii Steud.)(180 kg·hm^-2),蛊羊茅(F.fascinata)最低(72.3 kg·hm^-2)。种子产量与单序籽粒数、单序小穗数、单序小花数、单株穗重、千粒重、花序长、种子长呈极显著或显著正相关;单序小穗数对种子产量影响直接效应最大,是影响种子产量的主要因子。

关键词: 羊茅属, 种子产量, 产量构成因子

CLC Number:

S330.3

LIANG Guo-ling, YAN Hong-bo, ZHOU Qing-ping, LIU Wen-hui. Seed Yield and Yield Components of Four Festuca L. Species in Alpine Region[J]. Acta Agrestia Sinica, 2011, 19(3): 458-462.

梁国玲, 颜红波, 周青平, 刘文辉. 高寒地区羊茅属4种牧草种子产量及构成因子的研究[J]. 草地学报, 2011, 19(3): 458-462.

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Seed Yield and Yield Components of Four Festuca L. Species in Alpine Region

高寒地区羊茅属4种牧草种子产量及构成因子的研究

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