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Comparative Analysis of morphologic traits of 50 Large-flowered Chrysanthemum Varieties

Agricultural Science & Technology 2016年第2期17卷 317-322页

作者：沈珍毛燕吴德智袁伟杨旭湖北生态工程职业技术学院湖北武汉430200 麻城市五脑山林场湖北麻城435000

With 50 large-flowered Chrysanthemum varieties from germplasm nursery of Wunaoshan Forest Farm in Macheng City as research objects, 64 morphological traits were investigated by field experiments adopting randomized block design. The morphological differences were observed by uniformity analysis, variability analysis, principal component analysis and cluster analysis. The result showed that the vari- able coefficients of 59 traits were greater than 15%; the contribution rate of first seven principal components reached 81.45%; and it was found by clustering analy- sis that the 50 germplasm resources could be divided into four clusters with obvious morphological differences, and plant type could be used as an index for classifica- tion.

关键词： Large-flowered Chrysanthemum morphologic traits Variability analysis Principal component analysis Clustering analysis

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Taxonomic Status of Daduhe Loquat （Eriobotrya prinoides var. dadunensis）

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Journal of Agricultural Science and Technology(B) 2012年第6期2卷 659-664页

作者： Wang Yongqing Yan Juan Yang Qin Fu Yan Luo Nan Lv Xiulan College of Horticulture Sichuan Agricultural University Ya'an 625014 Sichuan China

The taxonomic status of Daduhe loquat （E. prinoides var. dadunensis） was studied through analyzing genetic relationships among Oakleaf loquat （E. prinoides）, Daduhe loquat and Common loquat （E. japonica） using inter simple sequence repeats （ISSR） molecular marker and morphologic marker in this paper. Based on ISSR marker research, the similarity coefficient between Oakleaf loquat and Common loquat was lower than the similarity coefficient between Oakleaf loquat and Daduhe loquat while the similarity coefficient between Daduhe loquat and Common loquat was intermediate. The highest additivity was obtained when Daduhe loquat was regarded as the undetermined hybrid （45.8%）. The specific bands of Oakleaf loquat and Common loquat were present in Daduhe loquat. Based on morphologic traits research, Daduhe loquat was also between Oakleaf loquat and Common loquat but a little leaning to Oakleaf loquat. All the results support that Daduhe loquat was hybrid of Oakleaf loquat and Common loquat.

关键词： Common loquat Daduhe loquat genetic relationship ISSR marker morphologic traits Oakleaf loquat taxonomic status.

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Effects of morphological traits on Total Weight of Clam Meretrix lamarchii

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Animal Husbandry and Feed Science 2015年第6期7卷 339-341,363页

作者： Zhang Jiali Wang Qingheng Deng Yuewen Du Xiaodong Key Laboratory of Aquaculture in South China Sea for Aquatic Economic Animal of Guangdong Higher Education Institutes Fisheries CollegeGuangdong Ocean University

Clam Meretrix lamarchii is delicious seafood with high economic value. The M. lamarchii in present market is mainly collected from wild population due to the lack of large-scale artificial seed production. In 2013,we carried out the artificial seedling exploration of M. Lamarchii. The current study utilized several statistical methods to analyze the effects of morphological traits on M. Lamarchii,which may provide knowledge for clam quality seedlings breeding work. The samples of M. Lamarchii were randomly sampled from Donghai Island,Zhanjiang. Shell length（ SL）,shell width（ SW）,shell height（ SH）,ligament length（ Li L）,lunule length（ Lu L） and total weight（ TW） of two-year-old M. Lamarchii were measured. A correlation coefficient matrix was constructed based on the results,where the total weight was set as the dependent variable and others as independent variables. Path coefficient and correlation index were calculated,and the major phenotypic characters were determined. The results showed that all the correlation coefficients between independent variables and dependent variable were significant（ P 0. 05）. The effects of the shell length,shell width,and shell height on the total weight were significant（ P traits was established as Y;=- 126. 784 + 1. 249X;+ 2. 036X;+ 0. 911 X;,where YWis total weight,X;,X;and X;are the shell length,shell width and shell height,respectively. The current study may contribute to the artificial breeding of the species.

关键词： Meretrix lamarchii morphologic traits weight path analysis regression equation

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