2个彩色棉材料的农艺性状和纤维发育特点研究

以常规白色棉 3 3B为对照 ,于 2 0 0 0～ 2 0 0 1年在山东棉花研究中心试验站 (临清 )对大田种植的 2个彩色棉绿色棉和棕色棉材料的农艺性状与纤维发育特点进行了研究。结果显示 ,2个彩色棉材料的营养生长旺盛 ,具有早发早熟的特点 ,但铃重小 ,衣分低 ,皮棉单产仅为对照 3 3B的 5 0 %～ 60 %。彩色棉的纤维品质比对照品种差 ,其中绿色棉的纤维品质最差 ,基本无纺织利用价值。彩色棉的纤维发育过程与对照相比有很多不同之处 ,表现在 2个彩色棉材料的棉纤维在开花后 3 0～ 40天出现颜色 ,纤维伸长期短 ,伸长速率低 ,次生壁加厚慢 ,纤维伸长与次生壁加厚重叠的时间短 ,这可能是彩色棉纤维品质差的主要原因。

Study on agronomic characters and fiber development of twomaterials of naturally colored cotton

A field experiment was conducted in the Experimental Station of SCRC in 2000-2001 to investigate the agronomic characters and fiber development of two materials of naturally colored cotton (green and brown fiber), using 33B (white fiber) as the check Results showed that the colored cotton had evident advantages in vegetative growth, development and earliness of maturity in comparision with the check 33B However, both boll weight and lint percentage of colored cottons were much lower than those of 33B, which resulted in a 50%-60% decrease in unit yield of lint compared with 33B Fiber quality of colored cottons was poor, of which green cotton fiber was almost without textile value Quite big difference in fiber development between colored cottons and 33B was observed, with colored cotton having some characters, such as shorter period of fiber elongation, lower speed in fiber elongation, slowly secondary wall thickening and shorter overlapping period of fiber elongation and secondary wall thickening It is suggested that poor lint quality of colored cottons was closely correlated to their fiber development