三种不同苗源生产脱毒马铃薯原原种产量比较试验

对3种不同苗源（试管薯、试管苗、扦插苗）生产脱毒马铃薯原原种的产量进行对比试验,结果表明：（1）在常规栽种季节（四川地区春季为3月20日~4月20日,秋季为8月25日~9月25日）的条件下,试管薯生产原原种的产量最高,每株平均为3.5粒,试管苗与扦插苗产量相当,每株平均为2.8粒;（2）在延迟栽种的情况下,其产量高低为试管薯〉试管苗〉扦插苗,试管薯每株平均为1.9粒,试管苗为2.0粒,扦插苗为1.8粒;（3）方差分析表明,常规栽种季节试管薯与试管苗和扦插苗的产量分别达显著水平,延迟栽种条件下3者产量均未达显著水平。因此,大规模生产脱毒马铃薯原原种企业在常规栽种季节建议使用试管薯苗源,而延迟栽种的情况下建议大量使用扦插苗进行生产。

Yield of Pre-elite Virus-free Potato for Three Seeding Sources

Yield of the pre-elite virus-free potato was tested and compared for three different seeding sources（microtuber,tube plantlet,and cutting stock）.The results showed that（1） on the condition of regular planting seasons（the spring from March 20 to April 20,and the fall from August 25 to September 25 in Sichuan Province）,the microtuber had the highest yield,an average of 3.5 grain per plant,and the tube plantlet and cutting stock had quite similar yield,an average of 2.8 grains per plant;（2） on the condition of delayed planting season,the yield of the microtuber was more than those of tube plantlet and cutting stock,and on the average,the microtuber had 1.9 grains per plant,the tube plantlet had 2.0 grains per plant,and the cutting stock had 1.8 grains per plant;and（3） analysis of variance showed that significant difference was found in pre-elite yield among microtuber,and tube plantlet and cutting stock in regular planting seasons,and there was no significant difference in the three sources tested under delayed planting season.Therefore,in production,the enterprise should choose microtuber as seeding source to increase potato yield in regular planting season,while in delayed planting season cutting stock should be used.