喀斯特地区木本油料扁核木地理种源变异研究

A Study of Geographical Provenance Variation of a Woody Oil Plant (Prinsepia utilis) in the Karst Region

摘要: 对贵州福泉、都匀、麻江、长顺、龙里和贵定6个喀斯特山地内不同地理种源的扁核木在种纵径、种横径、鲜果出种率、种子含油率及种子千粒重等指标进行研究。结果表明：不同地理种源的扁核木种在形态和鲜果出种率上存在显著差异，种子的含油率和千粒重差异不显著。扁核木出种率为30%~38%，种子的含油率为25%~28%，种子的千粒重为190 g~208 g。不同地理种源的扁核木种子长、宽、出油率、千粒重及鲜果出种率与种源地的温度、海拔、降雨量及无霜期密切相关。

Abstract: Through the study of the indexes of the proportion of seed weight in fresh fructification weight, length and width of the seed, oil content of seeds and thousand-grain weight of Prinsepia utilis Royle of different geographical provenances, the results showed that there were significant differences in the morphology and fresh fruit seed yield of different geographical provenances. The P. utilis seed had an oil content of 25% to 28%, and the thousand-grain weight of the seeds was 190 g~208 g.The temperature, altitude, rainfall and frost-free season of provenance were closely related to the indexes of proportion of seed weight in fresh fructification weight, length and width of the seed, thousand-grain weight and oil content of seeds.