摘要
【目的】本试验以探索经济、高效的马铃薯原原种繁育时间为目的,为昆明地区马铃薯原原种生产提供指导。【方法】以马铃薯‘合作88’为试验材料,设14个不同移栽期,研究温室条件下不同时间移栽对马铃薯脱毒苗病害发生及产量的影响。【结果】移栽时间不同的马铃薯脱毒苗植株早疫病和晚疫病的发生存在显著差异(P<0.05)。T1的早疫病病情指数和发病率最大,但其晚疫病病情指数和发病率最小;T14的晚疫病病情指数和发病率最高,且显著高于其他处理(P<0.05);移栽时间不同,温室中马铃薯脱毒苗植株原原种产量和种薯规格有显著差异(P<0.05),主要表现在薯块大小和薯块数量上的差别,T1、T10和T12的大、中种薯率和原原种产量均高于其他处理。【结论】适宜马铃薯脱毒苗移栽的时间为上半年的T1(4月4日)、下半年的T10(8月17日)和T12(9月16日)前后一周。
[ Purposes] The objective of this study was to explore the economic and efficiently breed- ing time of potato breeder seed and to provide a guidance for potato breeder seed production in Kun- ruing area. [ Methods] Potato ＇ C88＇ was used as the test material and 14 transplanting time was set up. The effects of different transplanting time on disease epidemic and yield of virus-free potato plant- lets under greenhouse conditions were studied which provided guidance for potato breeder seed produc- tion in Kunming area. [ Results] In the greenhouse, there was a significant difference （ P 〈 0.05 ） in the occurrence of early blight and late blight of virus-free potato plantlets that transplanted at differ- ent time. The early blight incidence and disease index of T1 were maximal and the late blight inci- dence and disease index of T1 were minimal. The late blight incidence and disease index of T14 were maximal, at the same time, significantly higher （ P 〈 0.05 ） than other treatments. In the greenhouse,there was a significant difference （P 〈 0.05 ） among breeder seed yields and the seed sizes of virus- free potatoes plantlets that transplanted at different time, which mainly reflected on the difference be- tween seed size and seed numbers. The large and medium seed potato rate and breeder seed yield of T1, T10 and T12 were higher than other treatments. [ Conclusion] The best transplanting time to vi- rus-free potatoes plantlet is a week before or after T1 （April 4th） of first-half year, TIO （August 17th） and T12 （September 16th） of the second-half year.
出处
《云南农业大学学报（自然科学版）》
CSCD
北大核心
2017年第3期402-409,共8页
Journal of Yunnan Agricultural University:Natural Science
基金
云南省科技计划项目(云财农[2013]364号)
云南农业大学博士科研基金(A2002257)
关键词
马铃薯脱毒苗
移栽时间
晚疫病
早疫病
原原种产量
virus-free potato plantlets
transplanting time
late blight
early blight
breederseed yield
