不同杉木半同胞家系种子品质比较分析研究

Comparison on Seed Quality of Different Half-sib Families of Cunninghamia lanceolata

为探讨不同杉木Cunninghamia Lanceolata半同胞家系种子的品质特征,对江西省赣州市崇义县高坌林场省级杉木良种基地二代杉木种子园20个半同胞家系种子的球果鲜质量、种子总质量、出籽率、种子千粒质量、优良度等进行比较研究。结果表明,不同的杉木半同胞种子在球果鲜质量、种子总质量、种子千粒质量和优良度方面均有显著性差异(P<0.05)。73号半同胞家系种子整体品质最好,其球果鲜质量、种子总质量最大,分别达到0.4067kg,16.2335 g,种子的千粒质量、优良度、出籽率分别为8.1360 g,44%,3.99%,且千粒质量和优良度显著大于绝大部分家系种子(P<0.05)。29,31,35号半同胞家系种子各项品质指标均靠前,整体品质较好。杉木半同胞家系种子的出籽率与球果鲜质量、种子总质量、千粒质量、优良度值均不存在单一的正相关性。半同胞家系的种子品质与种子品质指标的离散程度没有相关性。

Fresh cones of 20 half-sib families of Cunninghamia Lanceolata were collected from Second Generation Clonal Seed Orchard in Ganzhou,Jiangxi province in October 2018.Determinations were implemented on their fresh cone weight,seed weight,seed yield,thousand seed weight and seed soundness.The results showed that there were significant differences in seed fresh cone weight,seed weight,thousand seed weight and seed soundness among 20 half-sib families.The family of No.73 had the best seed quality,with the largest fresh cone weight and seed weight of 0.4067 kg and 16.2335 g,while its thousand seed weight,seed soundness and seed yield had 8.1360 g,44%and 3.99%,and the thousand seed weight and seed soundness was significantly higher than most families.Followed were families such as No.29,No.31 and No.35.The experiment demonstrated that it had no single positive correlation between seed yield with fresh cone weight,seed weight,thousand seed weight and seed soundness.There was no correlation between seed quality and the dispersion degree of seed quality index.