摘要： 在周年分期播种条件下对小麦冬性春性不同的各类型品种的穗分化研究表明,小麦对低温的反应属数量性的,低温诱导的是小穗原基而不是茎生长锥的伸长;生长锥下部单棱双向发展区是营养器官与生殖器官原基“过渡区”;主茎叶片数的决定时期因品种的冬性、春性类型及播种后的温度条件而异.
关键词:
小麦周年播种,
穗发育
Abstract: In this study,four cultivars of common wheat(Triticum aestivum L.), including types of winter, semi-winter and spring wheat, were sown at mon-thly intervals from Oct.198? to July.1984 in Banding,Hebei I'rovincc.The spike differentiation of main stem was studied fur the cultivars tested.The results indicate that the spikelet primordium instead of elongation of growth cone is induced by the lower temperature factor."thus,the spikelet diffe-rentiation stage is a critical one in wheat development;The double-develop-ment area in the lower part of grow cone is referred to as transition from vegetative organ primordia to reproductive ones:The number of main stem de-pends on the types of wheat and temperatur a after sowing.
Key words:
Wheat,
Spike develoment,
Spike differetiation
张敬贤, 毕桓武. 周年播种条件下小麦的穗发育[J]. 华北农学报, 1986, 1(2): 23-27. doi: 10.3321/j.issn:1000-7091.1986.02.004.
Zhang Jingxian, Bi Huanwu. A STUDY ON SPIKE DIFFERENTIATION IN VAR旧US TYPES OF WHEAT CULTIVARS SOWN ALL THE YEAR ROUND[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1986, 1(2): 23-27. doi: 10.3321/j.issn:1000-7091.1986.02.004.