Morphological and seed set characteristics of centipedegrass accessions collected in China
Morphological and seed set characteristics of centipedegrass accessions collected in China
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DOI：
10.1663/0013-0001(2003)057
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发表时间：
2003-09-01
期刊：
影响因子：
2.6
通讯作者：
Elsner, E
中科院分区：
文献类型：
--
作者：
Liu, J;Hanna, W;Elsner, E
匍匐茎数和长度特征的最高和最低平均值差异大于2倍。最长匍匐茎的总长度差异达60%。匍匐茎生长最快和最慢的品种之间的差异为42%。最长节间和最短节间的差异达28%。叶片长度和宽度差异不大。自交结实率低于7%，表明自交不亲和程度高。开放授粉的结实率为37% ~ 87%。各性状的变异系数表明，中国材料应为该物种的遗传改良提供更多的变异。资料显示，在移栽后5周测量匍匐茎总长度足以评估本研究中匍匐茎的所有长度和数量特征。中国的加入为该物种提供了宝贵的新种质资源。
Greater than two-fold differences were observed between the lowest and highest means for stolon number and length characteristics. A 60% difference in total length was observed between the longest stolon of accessions. There was a 42% difference between the accessions with the fastest and slowest growing stolons. Accession with the longest and shortest internode differed by 28%. Small differences were observed for leaf length and width. Seed set under selfing was less than 7% indicating high self-incompatibility. Open-pollinated seed set ranged from 37% to 87%. Coefficients of variation for the various characteristics measured indicate that the Chinese accessions should provide more variation for genetic improvement in this species. Data showed that measuring total stolon length at five weeks after transplanting was adequate for evaluating all of the stolon length and number characteristics in this study. The Chinese accession appear to be a valuable source of new germplasm for this species.