Genetic Diversity Analysis of 15 Phenotypic Traits Related to Catkin in Yanshan Chestnut

doi:10.7668/hbnxb.20191320

Abstract

Abstract: Genetic variations analysis of 127 Yanshan chestnut germplasms from 11 populations 15 phenotypic traits related catkin of Yanshan chestnut were designed with genetic diversity analysis,correlation analysis and principal component analysis,in order to provide valuable basic data and theory foundation for normalization,standardization,preservation and construction of chestnut core collections,provides the basis for the gene localization of agronomic traits. The results showed that:phenotypic traits related catkin of Yanshan chestnut were rich in phenotypic diversity,with mean variation coefficient (CV) of 27.55% and Shannon's diversity index(H')of 1.99. The mean variation coefficient(CV=64.80)of bisexual catkin numbers/catkin numbers was the largest,the mean variation coefficient (CV=7.52)of male catkin numbers/catkin numbers was the smallest. The Shannon's diversity index(H'=2.08)of stamen length was the highest,the Shannon's diversity index(H'=1.89) of bisexual catkin numbers/catkin numbers were the lowest. 9 phenotypic traits related to catkin were highly significant which indicated that a wide range of variation existed in these two levels. Correlation analysis showed that:More flower traits were highly significantly and extreme significantly related. Principal component analysis showed that floral traits in the first 5 principal components reflect the total information content 85.35%,bisexual catkin numbers/bearing shoot,catkin length/catkin width,catkin width,catkin length,bisexual catkin numbers/catkin numbers,male catkin numbers/catkin numbers,female flower numbers/bearing shoot,stamen length,floral axis length/floral axis width,9 characters was the main factor causing variation in traits of Yanshan chestnut. The 127 materials were divided into 8 kinds of cluster analysis. Flower character same source with similar material part can get together,the results were similar to principal component analysis.

Key words: Yanshan chestnut, Germplasm, Catkin, Phenotypic traits, Genetic diversity

CLC Number:

S664.2

YANG Zhenli, WANG Guangpeng, ZHANG Shuhang, GUO Yan, ZHANG Xinfang, LI Ying. Genetic Diversity Analysis of 15 Phenotypic Traits Related to Catkin in Yanshan Chestnut[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2020, 35(S1): 93-101. doi: 10.7668/hbnxb.20191320.

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