【作者】 覃文流；

【导师】 陆国盈；

【作者基本信息】 广西大学 ， 作物栽培学与耕作学， 2003， 硕士

【摘要】 本试验在甘蔗玻璃大棚槽栽条件下，于甘蔗伸长中后期停止供水(干旱胁迫)处理60天，以被大田生产证实为较耐旱的桂糖11号(G．T．11)为对照品种，以正常供水处理为对照，从生理生化、农艺性状、产量和品质等方面对两个新引进品种粤糖93／159(Y．T．93／159)和新台糖25号(ROC25)进行抗旱性研究。结果表明：新台糖25号的抗旱性弱于对照品种桂糖11号，但高于新台糖16号；粤糖93／159的抗旱性弱于对照品种桂糖11号和新台糖16号。参试品种抗旱性强弱排序为G．T．11＞ROC25＞ROC16＞Y．T．93／159。新台糖25号和粤糖93／159干旱胁迫的产量损失率分别为-19.02％和-21.44％，蔗糖分的损失率分别为9.77％和13.55％。ROC25对干旱胁迫最为敏感，属于干旱胁迫敏感型品种，相对而言，Y．T．93／159则为干旱胁迫钝感型。更多还原

【Abstract】 Research was done on drought resistance indexes, such as physiological character, agronomical character, yield and technical character of two new-introduced sugarcane varieties, ROC25 and Y.T.93/159 under water-controlled conditions, and two other sugarcane varieties, namely, ROC 16 and G.T. 11 were taken as the control varieties. The results show that the drought resistance of ROC25 and Y.T.93/159 are inferior to that of ROC 16 and G.T. 11 . Under the conditions of drought stress, the yield loss rate of ROC25 and Y.T.93/159 are 19.02% and 21.44% respectively , and the sucrose loss rate are 9.77% and 13.55% respectively. The results also show that ROC25 is a drought-stress-sensitive sugarcane variety, and Y.T.93/159 is a drought-stress-inactive one.更多还原