Study on Variance of Seed Phenotypic Traits and Germination Ability of Citrus hongheensis from Different Populations
Faculty of Forestry, Southwest Forestry University, Kunming 650224, China
| Abstract: | Citrus hongheensis is a rare and unique species in Yunnan Province and grows in narrow areas of south bank of Yuanjiang River (Honghe River) with few living individuals. In this study, seeds from five populations (Lvchun-Daxing, Honghe-Jiayin, Honghe-Dayangjie, Yuanjiang-Nanuo-Damang and Yuanjiang-Nanuo-Zhujie) of C. hongheensis in Yunnan Province were used to study the morphological characteristics and differences in germination ability of seeds from different populations and to find out the population with the highest germination ability of C. hongheensis seed. The results showed that seed length, the germination capacity and germination rate of Lvchun-Daxing were highest (84.51%, 86.95%), and these of Honghe-Jiayin were lowest (70.95%, 71.43%). The seed phenotypic traits of C. hongheensis were correlated with germination potential and germination rate to varying degrees. The seed length and seed width were significantly positively correlated (R=0.960), while the seed thickness was significantly negatively correlated with the seed length and width (R=-0.908, R=-0.944). The results can provide a theoretical basis for further systematic research on the breeding characteristics of C. hongheensis, and for population propagation, breeding of improved varieties, resource protection and development of C. hongheensis. |
| Keywords: | Citrus hongheensis; Provenance; Seed; Phenotypic Traits; Germination Ability |
| DOI: | 10.57237/j.jaf.2023.03.001 |
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Received: 16 May 2023
Accepted: 29 June 2023
Published Online: 24 July 2023
Funding
| 1. | 国家自然科学基金地区基金项目《广义宜昌橙的系统演化与生物地理起源研究》(31360048) |
| 2. | 云南省教育厅科学研究一般项目《珍稀植物红河橙的濒危机制研究》(2021J0165) |
| 3. | 西南林业大学西南山地森林资源保育与利用教育部重点实验室开放项目《野生柑橘种质资源红河橙的保护及利用研究》(KLESWFU-201803) |
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