摘要
检测了云南作物种质低温中期库保存10年后的278份云南稻种和153份小麦的发芽率,分析了检测材料总体平均、物种、生态种植区来源和不同发芽率起始水平的平均活力变化。结果表明被检测的稻种和小麦总体平均活力下降极显著,但34 5%的稻种和26 8%的小麦活力有上升趋势;不同物种包括亚种、生态型和变型,生态种植区来源和起始发芽率水平间种子活力下降程度存在较大差异;部分检测材料活力升高的主要因素来自种子本身的休眠和贮藏等遗传特性;就检测材料而言,籼粳交错区的云南地方稻种及早熟和中早熟麦区的小麦较其他稻区和麦区种质更容易贮藏。
Germination percentage of 278 accessions rice and 153 accessions wheat germplasm conserved for 10 years at Yunnan Crops Germplasm Low Temperature Metaphase Storeroom(YCGLTMS)were tested.Mean vigor of seed from all tested material,species and origin ecozones planted at different initial germination percentage were analyzed.The result indicated that mean vigor decrease of rice and wheat tested were very significant,but vigor of 34.5% rice and 26.8% wheat rose;that difference of vigor decreased among different species including subspecies,ecotype variety form and origin of ecozones as well as the level of initial germination percentage were very significant;that vigor rising in partial materials tested was mostly due to their heritable characters,eg.dormancy and storability etc.Storability of rice germplasm form hsien-keng interleaving district and wheat germplasm form early or middle-early ripening wheat districts were easy to store.
出处
《西南农业学报》
CSCD
2004年第6期705-711,共7页
Southwest China Journal of Agricultural Sciences
基金
云南省农科院资助
