期刊论文

中文

中国农业科学

0578-1752

1992

25

6

58-62

本校为第一机构

湘苎3号(原名C-20)系广西黑皮蔸经自由授粉的后代中选育而成的。该品种具有光合生产力强,干物质积累速度快,高产、优质、抗病、适应性强等特性。在湖南省多点试验结果,增产15%-38%,全年纤维平均支数达2000支,高抗花叶病。湘苎3号~(14)C同化物的运转速率和向麻皮的分配率均高于对照品种。光合速率、蒸腾速率、叶导性和水分利用率均显著高于对照品种,而暗呼吸速率只略高于对照。湘苎3号的最大叶面积系数可达7左右、光合速率可达14mgCO_2.dm~(-2)h~(-1)。可见,湘苎3号具有较良好的生理基础。

Fiber yield of new variety Xiangzhu 3 (Boehmeria nivea L.) is 15%-38% higher than that of check cuitivars in the variety test of five counties in Hunan province. Its average fiber fineness of three harvests is 1996-2100 counts Its mosaic disease severity index is 4.32, which is obviously lower than that of check cultivars. Its rate of translocation and partition of ~(14)C-labelled assimilate is higher. Moreover, compared with cheek cultivar 'Luzhuqing', Xiangzhu 3 is characterized by markedly higher total transpiration, conductance and water use efficiency. These are closely related with photo...