小麦不同生态型品种温光发育的互作效应

在人为控制不同温光组合条件下,对小麦不同生态型品种发育特性进行研究。结果表明,低温和光长二者之一成为限制发育的因子时都表现为累积效应;二者同时作用于发育时表现为互作效应.采用二元高次逐步回归统计方法分析温光及其互作效应与发育的关系,得知小麦不同生态型品种对影响发育的主导因子及其作用方式的反应不同。最终将不同生态型品种对温光互作效应的反应分为四个类型:高温长日型、高温短日型、低温长日型和低温短日型。

A STUDY OF THE COMBINED AD INTERRELATED EFFECTS OF TEMPERATURE AD LIGHT ON THE DEVELOPMENT OF DIFFERENT ECOTYPES OF WHEATVAR1ETIES (T.AESTIVUM L.)

Tho characteristics of the development of different ecotypes of wheat varieties were studied under controlled conditions of different combinations of temperature and light during 1986～1988.Results showed that cumulative effects on development were given when either tempcrature or light become the limiting factor of development; while the simultancous effects of thc two appcared as interrelated.The effects of the interrclated actions of tempera- ture and light on the development of tested varieties were patterned by the quadratic progressive regression.Various response of the development of different ecotypes affected by the main factor and its way of acting were shown by the models.Furthermore,integral regression was used to reveal the effects in various stages and as a result,four different ecotypes were classified in terms of the responses to the interrelated effects of both temperature and light. These types were(1)high temperature and long day type,(2)high temperature ad short day type,(3)low tempera- ture and long day type,(4)low temperature and short day type.