2021年12月9日 星期四
中国假俭草结实性的比较分析
The analysis on the fruit characters of Eremochloa ophiuroides in China
2003年 第12卷 第4期 页码[21-26]    下载全文[0.8MB]  
摘要

本文以中国有代表性的58份假俭草〔Eremochloa ophiuroides(Munro) Hack.〕种源为试验材料,以假俭草品种“Common” 和 “TifBlair”为对照,对中国假俭草的种子产量及其组分进行了统计分析。结果表明:中国假俭草种子产量平均为15.1g/m2,花序密度平均为1510个/m2,平均结实率为54.4%,平均百粒重0.086g,单位花序小花数平均为20.2。各组分变异系数从大到小依次为:花序密度、结实率、百粒重和单位花序小花数。假俭草种子产量高低主要由花序密度决定,结实率和百粒重也对种子产量有一定的作用,而单位花序小花数对种子产量贡献很小。不同种源种子产量存在显著性差异,产自重庆渝北的E092种源种子产量极显著高于品种“Common”、 “TifBlair”及其他种源;有14份种源的种子产量在24.8~39.5g/m2范围内,均高于品种“Common”,但均未达到显著水平;有17份种源的种子产量高于品种“TifBlair”,但也均未达到显著水平。

Abstract

The seed yield and its components of 58 accessions of Eremochloa ophiuroides ( Munro) Hack . were statistically analyzed with `Common' and `TifBlair'  as the check samples. The results showed as follows: The average seed yield of accessions of this species in China is 15. 1 g/m2, the average density of spike 1 510 spikes/m2, the seedset rate 54. 4% , the average weight of hundred-grain 0. 086 g and the average number of spikelet per spike 20. 2. The coefficients of variation of the components of seed yield is ranked from big to small as:spike density, seedset rate, weight of hundred-grain and the number of spikelet per spike. Significant difference is existed in the seed yield of accessions in China.E092 is ranked the first accession with the seed yield 80. 2 g/m2, which is significantly higher than the seed yield of `Common' , `TifBlair' and other accessions in China. The seed yields of fourteen of all accessions are from 24. 8 to 39. 5g/m2 which are higher than that of `Common' , however, no significant difference is found. The seed yields of 17 accessions are higher than that of `TifBlair' , but no significant difference is also found.

关键词假俭草; 种质资源; 结实性;
Key wordsEremochloa ophiuroides (Munro) Hack.; genetic resources; seed production
作者刘建秀,朱雪花,郭爱桂,郭海林,宣继萍
所在单位江苏省中国科学院植物研究所(南京中山植物园)江苏南京210014
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下载次数211
基金项目国家自然科学基金资助项目(30070538); 江苏省农业攻关资助项目(BE2001350); 江苏省科学技术厅基础设施资助项目;