黄麻纤维产自黄麻属的两个种,即圆果种黄麻和长果种黄麻。鉴于黄麻纤维获自其茎皮,故纤维产量与株高走相关。在两个种中,株高的发育随始蕾而中止;故早开花是一种不受欢迎的特性,作为一种短日照植物(Kundu等,1957),其在短光周期下开花极早,故该作物在冬季将不形成纤维。甚至在正常生长季节(3～4月播种,8～9月收割)中,改变播种期亦将导致早开花(Joseph等,1978)。故期望有较长花前生 Jute fiber is produced from two species of Jute, ie, round fruit jute and long-fruit jute. Since jute fibers are obtained from their bark, fiber yield is related to plant height. In both species, the development of the plant height stops with the beginning of the bud; early flowering is therefore an undesirable characteristic. As a short-day plant (Kundu et al., 1957), it blooms very early under short photoperiod , So the crop will not form fibers in winter. Even during normal growing seasons (sowing in April-April and harvesting in August-September), changing the sowing date will lead to early blooming (Joseph et al., 1978). It is expected to have a long flowering before