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禾本科草坪草种子形态特征的变异与相关性
江生泉,程建峰,涂清芳,戴缘缘
0
(滁州职业技术学院食品与环境工程系,滁州 239000;江西农业大学农学院,南昌 330045)
摘要:
研究了18份不同基因型禾本科草坪草种子形态特征的变异与相关性。结果表明,禾本科草坪草种子形态特征的变异大小为千粒体积(16.34%)>千粒重(13.33%)>千粒表面积(13.22%)>粒长(9.76%)>粒比重 (8.43%)>粒宽(7.81%)>粒厚(6.74%);禾本科草坪草种子形态特征的种质聚类均可为3大类,类别间的性状值达显著差异(P<0.05);除千粒重与粒比重间未达显著相关外,其他不同禾本科草坪草种子形态特征间的相关性均达显著相关(P<0.05),粒长、粒宽、粒厚、千粒表面积和千粒体积与粒比重间呈负相关,其他禾本科草坪草种子形态特征间均呈正相关;千粒体积、千粒表面积、粒长、粒宽和粒厚均可反映种子特性;以上禾本科草坪草种子形态特征的变异特点和形态特征之间的相关性结果对于禾本科草坪草种质资源描述、品种改良、建立种子资源规范系统等方面具有指导意义。
关键词:  禾本科  草坪草  种子  形态特征
DOI:10.13610/j.cnki.1672-352x.20160512.006
基金项目:2016年安徽省高校优秀中青年骨干人才国内外访学研修重点项目(gxfxZD2016345)共同资助。
The correlations and variations of seed morphological characters in gramineous turfgrass
JIANG Shengquan,CHENG Jianfeng,TU Qingfang,DAI Yuanyuan
(Food and Environmental Engineering Department, Chuzhou Vocational and Technical College, Chuzhou 239000;College of Agronomy, Jiangxi Agricultural University ,Nanchang 330045)
Abstract:
The correlations and variations of seed morphological characters in 18 different genotypes of gramineous turf grass were studied. The results show that: the variation of seed morphological characters in gramineous turf grass was 1000-grain-volume (16.34%) > 1000-grain-weight (13.33%) > 1000-grain-surface-area (13.22%) > grain length (9.76%) > grain density (8.43%) > grain width (7.81%)> grain thickness (6.74%). The seed morphology of gramineous could be divided into three categories with a significant difference between individual categories (P < 0.05). The correlation analysis indicated that the correlation in other lawn grass seed morphological characteristics was significantly correlated (P < 0.05) except for 1000-grain-weight and grain weight. The grain length, grain width, grain thickness, 1000-grain-weight, 1000-grain-surface-area were negatively correlated with the grain weight. Other seed morphology of gramineous turf grass was positively correlated. The grain length, grain width, grain thick, 1000-grain-weight, 1000-grain-surface-area all could reflect the characteristics of the seed. These results of morphological variations and morphological characteristics will provide a theory support for the resource description, variety improvement and establishment of a seed resource standard system of gramineous turf grass.
Key words:  gramineous  turfgrass  seed  morphological characters

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