[Objective] This study was conducted to utilize and estimate Erianthus arundinaceum resources and to develop their elite traits. [Method] Phenotypic traits and genetic diversity were evaluated based on 5 quantitative ...[Objective] This study was conducted to utilize and estimate Erianthus arundinaceum resources and to develop their elite traits. [Method] Phenotypic traits and genetic diversity were evaluated based on 5 quantitative traits and 21 qualitative traits of 162 accessions of Erianthus arundinaceum collected from nine provinces in China （74 in Yunnan, 15 in Fujian, 19 in Guizhou, 18 in Hainan, 14 in Sichuan, 10 in Jiangxi, 4 in Guangdong, 4 in Guangxi and 4 in Zhejiang）. [Result] The Shannon-Wiener indices of qualitative traits among the E. arundinaceum populations from different provinces were generally low. The accessions from Fujian exhibited the highest genetic diversity index （0.762 4）, while those from Guangxi showed the lowest one （0.294 2）. There were great genetic variances in quantitative traits, with mean variation coefficients ranging from 14.95% to 32.15%. The accessions from Yunnan showed the highest variation coefficient （32.15%） and those from Guangxi showed the lowest one （14.95%）. Brix exhibited extremely significant nega- tive correlation with altitude and plant height showed extremely significant negative correlation with latitude. Coefficients of genetic divergence indicated that a high proportion of total genetic variation was retained within the populations from different regions, and the high gene flow showed that there were active genetic exchanges among these populations, suggesting no significant genetic divergence among these populations. According to genetic distance and UPGMA, there was a certain correlation between genetic distance and different sampling regions of E. arundinaceum. [Conclusion] The results provide theoretical references for resource collection , het- erosis application and development of excellent genes of sugarcane germplasm.展开更多
基金Supported by Crop Germplasm Protection Project of Ministry of Agriculture of the People’s Republic of China(2014NWB017)Fund for National Infrastructure of Sugarcane Germplasm Resources(2012-044)Fund for Sugarcane Industry Technical System Construction of Kaiyuan Field Station(CARS-20-6-13)~~
文摘[Objective] This study was conducted to utilize and estimate Erianthus arundinaceum resources and to develop their elite traits. [Method] Phenotypic traits and genetic diversity were evaluated based on 5 quantitative traits and 21 qualitative traits of 162 accessions of Erianthus arundinaceum collected from nine provinces in China （74 in Yunnan, 15 in Fujian, 19 in Guizhou, 18 in Hainan, 14 in Sichuan, 10 in Jiangxi, 4 in Guangdong, 4 in Guangxi and 4 in Zhejiang）. [Result] The Shannon-Wiener indices of qualitative traits among the E. arundinaceum populations from different provinces were generally low. The accessions from Fujian exhibited the highest genetic diversity index （0.762 4）, while those from Guangxi showed the lowest one （0.294 2）. There were great genetic variances in quantitative traits, with mean variation coefficients ranging from 14.95% to 32.15%. The accessions from Yunnan showed the highest variation coefficient （32.15%） and those from Guangxi showed the lowest one （14.95%）. Brix exhibited extremely significant nega- tive correlation with altitude and plant height showed extremely significant negative correlation with latitude. Coefficients of genetic divergence indicated that a high proportion of total genetic variation was retained within the populations from different regions, and the high gene flow showed that there were active genetic exchanges among these populations, suggesting no significant genetic divergence among these populations. According to genetic distance and UPGMA, there was a certain correlation between genetic distance and different sampling regions of E. arundinaceum. [Conclusion] The results provide theoretical references for resource collection , het- erosis application and development of excellent genes of sugarcane germplasm.
