抄録
In order to elucidate the maturity process of lint during the growing process of cotton fiber, the immaturity ratio (I), perimeter (p), weight fineness (W), wall thickness (t) of lint were daily measured by arealometer. Cotton variety used for this research was “Rikuchimen Kanno No.I”, a sort of upland cotton. Wall thickness and weight fineness of lints increased linearly from 24th day to 40th day after flowering and later showed constant value until the boll opening. Perimeter of lint showed a constant value from 20th day after the flowering to the boll opening. Maturity ratio (I) decreased linearly from 24th to 40th day after the flowering and later showed a constant value until the boll opening. From above experiments, it may be concluded that the elongation growth of lint completed by 22nd day after the flowering, the growth of wall thickness begined from 20th day after flowering, wall thickness increased linearly and completed 40th day after the flowering, and cellulose was synthesized and deposited in lint at the same rate during the secondary wall formation.
The relationships among immaturity ratio (I) and immaturity (D), perimeter (p), weight fineness (W) and wall thickness (t) are discussed.
