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| Comprehensive Evaluation of Agronomic Characters for 195 Accessions of Garlic Germplasm Resources in Southern China Region |
| HE Qiaoyun1，ZHOU Zhiman1，ZENG Zheng1，YUAN Xiaoge1，ZHOU Jianjun2，WANG Yanzhou1，LIU Touming1* |
| 1Institute of Bast Fiber Crops，Chinese Academy of Agricultural Sciences，Changsha 410205，Hunan，China；2Chaling County Bureau of Agriculture and Rural Areas，Zhuzhou 412400，Hunan，China |
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Abstract In order to screen out garlic resources suitable to be grown and planted in southern China region and with good appearance and high yield，this experiment took 195 accessions of garlic germplasm resources at home and abroad as material；investigated systematically the phenotypes of 11 agronomic quantitative traits in Changsha，Hunan；and carried out genetic diversity analysis，correlation analysis，principal component analysis and clustering analysis．Results indicated that these 195 accessions of garlic germplasm resources showed abundant genetic diversity in southern China region．The coefficient of variation ranged from 15.94% to 45.87%，of which the single bulb weight had the largest variation in garlic resources．The correlation analysis showed that these 11 quantitative traits were almost extremely significantly or significantly correlated with each other．Among them，plant height，leaf length，leaf numbers of single plant，overground pseudostem high and overground pseudostem diameter were all significantly correlated with bulb traits．In principal component analysis，the cumulative contribution rate of the first 2 factors had reached 65.96%．The including element information quantity could basically reflect the major information of all 11 quantitative traits．Clustering analysis revealed that 195 accessions of garlic germplasm resources could be divided into 4 groups．The traits of group I and group IV were all relatively excellent．And 13 accessions of good quality resources were screened out to be suitable for growing in southern China region．They had provided references for identification，evaluation of garlic germplasm resources；and selection，breeding of high-quality new varieties．
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Received: 03 January 2022
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