文献类型：期刊文献

中文题名：梭梭种子性状和繁殖力的遗传变异与评价

英文题名：Genetic Variation of Seed Traits and Its Reproductive Capacity of Haloxylon Ammodendron

作者：王葆芳[1] 张景波[2] 江泽平[1] 杨晓晖[1] 赵英铭[2]

第一作者：王葆芳

机构：[1]中国林业科学研究院林业研究所,国家林业局林木培育重点实验室,北京100091;[2]中国林业科学研究院沙漠林业实验中心,磴口015200

年份：2008

期号：1

起止页码：167-173

中文期刊名：干旱区资源与环境

外文期刊名：Journal of Arid Land Resources and Environment

收录：北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；CSSCI:【CSSCI_E2008_2009】；

基金：国家“863”节水专项课题(2002AA2Z4011)研究项目资助

语种：中文

中文关键词：梭梭;种源;种子性状;繁殖力;遗传变异

外文关键词：Haloxylon ammodendron ; source; seed traits ; reproductive capacity; genetic variation

分类号：S330

摘要：通过对梭梭6个种源的种子性状和繁殖力的研究，结果表明：（1）不同种源间种子性状和繁殖力存在显著差异，其质量指标差异大于形态指标，即单株种子重差异最大，干粒重次之，果翅长度最小；成活率的差异性明显大于发芽率。（2）各种源区间的种子性状和繁殖力之间的遗传差异为极显著水平，环境差异为显著水平，梭梭种子质量主要受遗传基因控制，而种子繁殖力则受遗传基因和环境因素及土壤等多重因素控制。（3）种子各性状与成活率均呈正相关。除果翅长度与成活率相关不密切外，其它性状之间均为极显著相关。（4）在种子果翅长度、干粒重、单株种子重、发芽率和成活率等5个指标中，变异程度最高的是单株种子重，最低者为成活率；各种源区种子各性状具有较高的重复力（0．8580～0．9737），受强度遗传基因控制，通过种源选择可望获得良好效果；通过对发芽率指标选择，可比直掺从成活率选择提高2．40％～24．86％（10％的选择率）的遗传进度；经综合选优评价，内蒙磴口种源的种子性状和繁殖力最好，青海次之，其次为甘肃和内蒙乌后旗，内蒙额旗和新疆最差。
This research dealed with the seed traits and its reproductive capacity of Haloxylon ammodendron acquired from 6 sources. The results showed that （1） There are significant differences of seed traits and its reproductive capacity among 6 sources. The differences among the seed quality indexes are greater than that among morphological indexes. The difference among seed weights of individual tree is the greatest, that among kernel weights is the following , and that among fruit wing legths is the smallest, for the reproductive traits, the difference of survival rate is significant greater than that of germination rate. （2） There are very significant difference （0.01 level） of genetic variations of seed traits and reproductive capacity among 6 sources, and significant difference （0. 05 level） of environmental factors, seed quality is determined mainly by genes, and seed reproductive capacity is determined by genes, soil properties and environmental factors. （3） Seed traits have positive correlation to germinate rate and survival rate. All the seed traits and reproductive capacity indexes have significant paired coorelation except fruit wing length with survival rate. The genetic capacities of all the indexes have positive paired correlation except that those of wing length have negative correlation to the other indexes. （4） Among the fruit wing length, kernel weight, individual seed weight, germination rate and survival rate, individual seed weight has the highest variation and survival rate has the lowest variation, seed traits of 6 sources have higher repetition （0. 8580-0. 9737）. Controlled by genes, the good result can be gotten through source selection. Provenance selection with germination rate index can increase genetic process by 2.40 -24.86% （ 10 % of selection rate） compared to the provenance selection with survival rate. Through comprehensive assessment, seed traits and its reproductive capacity can be sorted as Dengkou, Inner Mongolia 〉 Qinghai 〉 Gansu 〉 Wuhou Banner, Inner Mongolia 〉 Ekina Banner, Inner Mongolia 〉 Xinjiang.