新桑品种人工三倍体嘉陵16号光合速率的比较分析  

A COMPARATIVE ANALYSIS OF THE PHOTOSYNTHESIS RATE OF AN ARTIFICIAL TRIPLOID MULBERRY BREED-JIALING 16

作　　者：余茂德[1] 何昌智[1] 敬成俊 吴存容 

机构地区：[1]蚕桑学农业部部级重点实验室

出　　处：《蚕学通讯》1996年第2期2-5,共4页Newsletter of Sericultural Science

基　　金：<国家级科技成果重点推广计划>项目资助

摘　　要：本研究以人工三倍体新桑品种嘉陵16号叶片为供试材料,以二倍体品种湖桑32号叶片为对照,采用氧电极法测定叶片的光合速率.结果发现,在光照强度1.8万勒克司(Ix),水槽温度 30℃的条件下,嘉陵16号叶片的光合速率为5.9134mgCO_2/dm^2·hr,较对照湖桑32号(4.0492mg CO_2/dm^2·hr)高1.8642mg CO_2/dm^2·hr.其指数关系是:湖桑32号为100.00,嘉陵16号为146.01.经统计分析,两品种间的光合强度达极显著差异(|t|=6.3603>to.01= 4.604).该研究结果,从光合生理角度证实了人工三倍体新桑品种嘉陵16号优于二倍体对照品种湖桑32号.为进一步扩繁推广人工三倍体新桑品种嘉陵16号提供了生理依据.The oxygen electrode method was adopted to determine the photosynthesis rate in theblades of the mulberry breed Jialing 16, which is a newly developed artificial triploidvariety,and Lake mulberry 32. At an illumination intensity of 18000 1x and a water troughtemperature of 30℃,the photosynthesis rate of the two varieties were 5. 9134 and 4. 0492mg /CO2 dm2,respectively,the difference being highly significant statistically(|t|= 6.3603>t0.01 =4.604). Thus,the rerults confirm the superiority of Jialing 16 over Lake mulberry32 in the linght of photosynthesis rate and provide physiological basis for themultiplication and extension of the artificial triploid.

关 键 词：新桑品种 人工三倍体 嘉陵16号 光合速率 氧电极分析 

分 类 号：S888.2[农业科学—特种经济动物饲养]