摘要
以来源于中华猕猴桃和美味猕猴桃的48份雄株为试材,对其倍性及其花粉性状进行差异性检测,并进行聚类分析和相关性分析。结果表明:供试的48份雄株倍性之间具有较大的差异,有2x、4x、6x 3种倍性类型,其中中华猕猴桃多为低倍性(2x、4x),2x占整个供试中华猕猴桃样品总数的72.09%,变异系数为35.48%,美味猕猴桃均为6x;美味猕猴桃的花药数整体上高于中华猕猴桃,但花粉量和花粉活力整体低于中华猕猴桃。聚类分析表明,供试的48份雄株可分为4大类:Ⅰ类群花粉量变化幅度最大,所有样品每朵花花粉量为6 000~8 000粒;Ⅱ类群花药数最多且变化幅度最大,最大花药数与最小花药数样品均在此类群中,同时该类群还包含2x、4x、6x 3种类型倍性;Ⅲ类群花粉活力最高;Ⅳ类群花粉量最高且均为2x,花药数与花粉活力变化幅度最小。相关性分析表明,雄株倍性与花药数之间呈极显著正相关,其皮尔逊相关系数为0.811。
Forty-eight male plants of Actinidia c＇hinensis and A. delicio.sa which collected previously were used as experimental materials in this study. The differences in ploidy and pollen traits were detected, and the cluster analysis and correlation analysis were also carried out. The results showed that there is a big difference between the forty-eight male plants of A. ehinensl;s and A. delieiosa, which have 2x, 4x, 6x three ploidy types. The ploidy of most of the the A. ehinen.si,＋ is 2x and 4x, and 72.09% of the A. ehinenm;＋ is 2x, with the coefficient of variation is 35.48%. For A. delieio,＋a, all type of ploidy are 6x. The anther number of the A. delieiosa is higher than that of A. chinenM, s, while the pollen viability and pollen count of the A. delieio.＋a is lower than that of A. ehinensis. By means of the cluster analysis, the forty-eight male plants can be divided into four major categories, of which the first category has the biggest rang of pollen count, the pollen content of all samples was concentrated within 6 000~8 000 grains. The second category has largest anther number and the biggest rang of it. The category contain the largest and the lowest anther number of sample, as the same time the three level of ploidy （2x, 4x, 6x） are in it. The pollen viability of the third category is the most highest and all the samples of the fourth categories are diploid, the rang of the anther number and pollen viability are smallest. Correlation analysis showed that there is a significant correlation between ploidy and anther number with the Pearson correlation coefficient is 0.811.
出处
《中国果树》
北大核心
2018年第2期13-17,22,共6页
China Fruits
基金
国家科技基础性工作专项(2012FY110100-7)
江西省重大科技专项(20161ACF60007)
江西省现代农业产业技术体系建设专项(JXARS-05)
关键词
猕猴桃
雄株
倍性
花粉性状
Actinidia
male plant
ploidy
pollen characters
