大豆叶片比叶重和叶绿素含量的研究

A STUDY ON SLW AND CHLOROPHYLL CONTENT OF THE SOYABEAN LEAF BLADE

This essay is the result of the study of three kinds or res- erved wild soyabean and ten kinds of cultivated soyabean.I deals with leaf dry weight per unit leaf area (SLW) and chlo- rophyll content,and their correlation at different bearing sta- ges.Soyabean SLW at the blossom and seed stages is higher than other stages and the average value at the stages is 55.70 and 64.75g/m~2.There is a remarkable difference of the chlorophyll content of the leaf blade between different species of soyabean Snchdiversity is discernible between wild and cultivated soyab- ean at their different bearing stages.The average of cultivated soyabean is 4.48mg/dm~2 while that of wild one3.64mg/dm~2.There is,in general,no correlation or the correlation is not noticeable between SLW and chlorophyll content. The soyabean bearing stage is of great importance for the ecological character of cultivation and rearing seed.The stage of running to seed is a significant one for the formation of output.SLW of the grown leaves at the upper level at the stage from full blossom to seed indicates the properties of the genotype of soyabean (Miao Yi-nong 1982) and the striking correlation between SLW and chlorophyll content (Bettery 1981). A further study of SLW and chlorophyll content at differ- ent bearing stages of soyabean is likely to provide useful mat- erial for the comparison of leaf character between different species.