PJB-2024-121
EVALUATION OF GERMPLASM RESOURCES AND SELECTION OF ELITE
Bihua Chen
Abstract
Monoclonal Gardenia jasminoides are widely cultivated in Fuding and other places in Fujian Province, and contiguous large-scale afforestation and multiple generations of continuous cultivation may cause soil fertility decline and ecological stability problems. We collected and evaluated the germplasm resources of G. jasminoides and select elite individuals and germplasm resources for cultivation in Fuding or Fujian. Variance analysis and comparison were conducted based on the fruit number, weight, diameter, length, and seed setting rateof 21 germplasm resources of G. jasminoides tested. The total fruit weight (yield) was taken as main index. The 11th germplasm resources (from central Jiangxi Province), with excellent yield, tree height and crown width, and the geniposide content conforming to China Pharmacopoeia regulations, were selected as the optimal germplasm resources, and the 9th germplasm resources (Hunan Province) was selected as the second optimal germplasm resources. The analysis results showed taking the fruit weight (yield) as the first index, and the geniposide content conforming to Chinese Pharmacopoeia regulations, 13 elite individuals were screened out, named as Min Lin Zhi No.1-13 respectively. The selection rate of elite trees was 5.9%. Compared with the population average, fruit number increased to over 248.23%, fruit weight increased to over 360.17%, tree height increased to over 151.47% (except Min Lin Zhi No.4), ground diameter increased to more than 119.65% (except Min Lin Zhi No.4), and crown width increased to more than 146.32%. Fruit weight, fruit number, tree height, ground diameter and crown width of all elite trees were higher than the control.
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