文献类型：期刊文献

中文题名：干热河谷小桐子不同种源的光合生理及生长性状

英文题名：Photosynthetic physiology and growth characteristics of different Jatropha curcas provenances in a dry-hot valley

作者：孙永玉[1] 李昆[1] 雷晨雨[1,2] 田瑞杰[1,2] 张春华[1] 冯德枫[1] 刘方炎[1] 唐国勇[1]

第一作者：孙永玉

机构：[1]中国林业科学研究院资源昆虫研究所,云南元谋干热河谷生态系统国家定位观测研究站,昆明650224;[2]西南林业大学林学院,昆明650224

年份：2021

卷号：27

期号：2

起止页码：351-356

中文期刊名：应用与环境生物学报

外文期刊名：Chinese Journal of Applied and Environmental Biology

收录：CSTPCD;;Scopus;北大核心:【北大核心2020】；CSCD:【CSCD2021_2022】；

基金：国家重点研发计划项目(2017YFC0505102)资助。

语种：中文

中文关键词：小桐子种源;光合参数;生长性状;干热河谷

外文关键词：Jatropha curcas provenance;photosynthetic parameter;growth characteristics;dry-hot valley

分类号：S794.9

摘要：林木种质是良种选育的基础,了解不同种源的生理和生长差异可确定所保存种源的适生地理范围,进一步筛选适宜发展的优良种源和品种,避免盲目扩大引种.对9个地理种源小桐子种质的最大净光合速率(Pmax)、叶绿素(Chl)含量、比叶面积(SLA)、叶面积指数(LAI)以及果实、种子单株产量等光合生理和生长性状指标进行测定.结果表明,不同地理种源小桐子在多个参数方面均存在显著差异.其中,红河种源的Pmax、Chl、SLA、LAI等参数均高于其他种源;而元阳种源的单株果实和种子产量显著高于其他种源,分别为产量最低的海口种源的9.2倍和10.3倍.相关分析表明,各种源果实、种子单株产量与Pmax、SLA以及LAI等参数呈极显著正相关关系.植物本身的遗传特性及其对生长环境适应性的不同是造成小桐子产量等性状差异的主要原因,较高的光合能力、较大的SLA和LAI是小桐子高产的物质基础.(图3表4参26)
Forest germplasms are the fundamental basis for fine variety breeding.The physiological and growth differences between different provenances can determine the suitable geographical range of the preserved provenances to avoid blind introduction and further screen suitable provenances and varieties.To study the relationship between the seed yield and the photosynthesis,chlorophyll,and morphological characteristics of different Jatropha curcas provenances,the maximum net photosynthetic rate(Pmax),chlorophyll content,specific leaf area(SLA),leaf area index(LAI),and fruit and seed yields per plant were measured and analyzed in this study.The results showed that most of the parameters were significantly different among the nine provenances.Among the tested provenances,that from Honghe had better performance in terms of Pmax,chlorophyll content,SLA,LAI,and other parameters of photosynthetic physiology,and growth.The provenance from Yuanyang had the highest fruit and seed yields per plant with values of 4738.5 g and 275.2 g,which were 9.2 and 10.3 times higher than those of the lowest Haikou provenance,respectively.The fruit and seed yields per plant were significantly positively correlated with Pmax,SLA,and LAI.In conclusion,the differences in genetic characteristics and adaptability caused differences in yield,and the higher photosynthetic capacity,larger SLA,and larger LAI will lead to greater seed production.