李双, 邹娜, 张丹, 等. 不同种源红花荷种子萌发及幼苗生长特性研究[J]. 西南林业大学学报(自然科学), 2024, 44(6): 1–8. DOI: 10.11929/j.swfu.202312035
引用本文: 李双, 邹娜, 张丹, 等. 不同种源红花荷种子萌发及幼苗生长特性研究[J]. 西南林业大学学报(自然科学), 2024, 44(6): 1–8. DOI: 10.11929/j.swfu.202312035
Li Shuang, Zou Na, Zhang Dan, Yuan Siqi, Li Ziye, Gan Yao, Zeng Yong, Wu Zhongqin. Study on seed germination and seedling growth characteristics of Rhodoleia championii from different provenances[J]. Journal of Southwest Forestry University. DOI: 10.11929/j.swfu.202312035
Citation: Li Shuang, Zou Na, Zhang Dan, Yuan Siqi, Li Ziye, Gan Yao, Zeng Yong, Wu Zhongqin. Study on seed germination and seedling growth characteristics of Rhodoleia championii from different provenances[J]. Journal of Southwest Forestry University. DOI: 10.11929/j.swfu.202312035

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不同种源红花荷种子萌发及幼苗生长特性研究

Study on seed germination and seedling growth characteristics of Rhodoleia championii from different provenances

  • 摘要: 以海南海口、江西南昌、广西九万山、江西赣州4个不同种源的红花荷种子为研究材料,通过测量统计各种源地红花荷种子的大小、活力、萌发特性、幼苗生长特性以及各指标与种源地地理气候间的相关性,探讨不同种源红花荷种子的形态和发芽率差异及其变异规律。结果表明:江西赣州红花荷种子的长、宽及千粒质量显著大于其他种源;江西赣州、广西九万山和江西南昌的红花荷种子活力和发芽率分别为98.00%和86.35%,显著高于海南海口的种子。来自广西九万山的种子萌发的幼苗生长健壮、叶片数和根冠比显著大于其他种源;江西赣州种源的幼苗生物量最高,而海南海口的种子萌发的幼苗长势较弱、高度更大。红花荷种子活力与母树年龄及纬度(北纬)呈极显著正相关、与种子厚及温度呈显著负相关;发芽率与种子活力、母树年龄及北纬呈显著正相关,与温度呈显著负相关;幼苗鲜质量与种子长和宽及年降水量呈负相关、与种子厚、千粒质量及叶片数显著正相关。由主成分分析综合得分可知,江西赣州和广西九万山的红花荷种源萌发及幼苗生长表现较佳,利于引种选育。

     

    Abstract: Using the seeds from four different provenances: Haikou, Nanchang, Jiuwanshan, Ganzhou, Jiangxi as materials, the size, vitality, germination characteristics, seedling growth characteristics and the correlation between the seeds and the geographical climate of the provenances were measured and analyzed to explore the differences and variation rules of the seed morphology and germination rate of different provenances.The results showed that the length, width and thousand-grain mass of the seeds from Ganzhou were significantly higher than those from other provenances. The seed vigor and germination rate of the seeds from Ganzhou, Jiuwanshan and Nanchang were 98% and 86.35% respectively, which were significantly higher than those from Haikou, Hainan. The germination seedlings from Jiuwanshan of Guangxi Province had strong growth, the number of leaves and the ratio of root to shoot were significantly higher than those from other provenings. The seedling biomass from Ganzhou, Jiangxi Province was the highest, while the seedling germination from Haikou, Hainan Province was weaker and larger in height. Correlation analysis showed that seed vigor was positively correlated with parent age and latitude (north latitude), and negatively correlated with seed thickness and temperature. Germination rate was positively correlated with seed vigor, mother tree age and north latitude, and negatively correlated with temperature. Seedling fresh quality was negatively correlated with seed length and width and annual precipitation, and positively correlated with seed thickness, thousand-grain mass and leaf number. According to the comprehensive score of principal component analysis, the seed source germination and seedling growth performance of Rh.championii in Ganzhou of Jiangxi and Jiuwanshan of Guangxi were better, which was conducive to introduction and breeding.

     

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