叶金水 叶金俊 谢爱香 毛海淋 唐昌贻

摘 要： 为了筛选出适合在遂昌县香榧雄树采穗圃中嫁接的香榧雄树优株枝条，以1#、2#、3#、东白湖4个香榧雄树优株为试材，采用随机区组设计的方法，对接后2 a的主枝长度、新梢生长量和新梢杈枝数量指标进行比较，试验结果表明：2#香榧雄树优株明显优于其它3个优株，其主枝长度64.40 cm、当年新梢生长量33.07 cm，与生长最差的3#香榧雄树优株比较，其主枝长度增加84.00%，当年新梢生长量增加96.03%，差异达到0.01水平。为此，2#香榧雄樹优株枝条可以作为香榧雄树采穗圃中嫁接的接穗在遂昌县进行推广应用，3#香榧雄树优株枝条需慎用。

关键词： 香榧雄树;遂昌县;接穗;嫁接;生长量

中图分类号：S664.5   文献标识码：A   文章编号：1004-3020（2021）02-0010-04

Effects of Different Torreya grandis ‘Merrillii Male Strains on Bud Growth after Docking

Ye Jingshui（1） Ye Jingjun（2） Xie Aixiang（1） Mao Hailing（1） Tang Changyi（1）

（1.Natural Resources and Planning  Bureau of  Suichang  County Lishui 323300;2.Suichang County Ecological Forestry Development Center Lishui 323300）

Abstract： To screen out Torreya grandis ‘Merrillii optimum male branches that are suitable for grafting in the ear picking nursery of the male trees in Suichang County，four Torreya grandis ‘Merrillii optimum trees from 1#，2#，3# and Dongbai Lake were selected as test materials，then，the length of main branch，the growth of new shoot and number of new shoot were compared after grafting 2-year-old using the method of random block group design.The results showed that，Torreya grandis ‘Merrillii 2# optimal tree is significantly better than the other 3 optimal trees.Its main branch length is 64.40 cm，and the growth rate of new shoots in the current year is 33.0 cm.Compared with Torreya grandis ‘Merrillii No.3 optimal tree，its main branch length increases by 84.00%，and the growth rate of new shoots in the current year increases by 96.03%，reaching the level of 0.01.Therefore，Torreya grandis ‘Merrillii 2# excellent branches can be used as grafted scions in Torreya grandis ‘Merrillii ear picking nursery in Suichang County for extension and application.# 3 Torreya grandis ‘Merrillii excellent branches should be used with caution.

Key words： Torreya grandis ‘Merrillii male tree;Suichang county;scion;the growth

香榧Torreya grandis‘Merrillii属裸子植物红豆杉科Taxaceae榧属Torreya常绿乔木[1-2]，为风媒花、雌雄异株植物[3]，雌花开放时必须有足量的雄性花粉，才能正常受精孕果[4]，由于它集果用、油用、药用、材用、绿化、观赏于一体，是一个多用途高效经济型生态树种[5]，所以，为了提高香榧单位面积产量，确保雌花开放时有足量的雄性花粉，前人开展了人工辅助授粉技术研究[5-8]，虽然能有效提升香榧授粉成功率，但也增加了花粉采集和人工授粉成本，没有在根本上解决香榧自然授粉花期不遇的问题，前人又开展了在雌株的直立骨干枝上高接花期相吻合的雄性接穗研究[3，6]，并取得了较好效果，但由于目前决选出来的香榧雄树优株数量不多，香榧雄树优株枝条根本不能满足生产所……