不同基质处理甘蔗桂糖44号试管苗瓶外生根的成活率  

Effect of Different Substrates on Rooting Survival Rate of GT44 Test-tube Plantlets

作　　者：刘红坚[1,2,3] 范业赓[1,2,3] 何为中[1,2,3] 李松[1,2,3] 余坤兴[1,2,3] 刘丽敏[1,2,3] 刘俊仙[1,2,3] 游建华[1,2,3] 卢曼曼[1,2,3] 

机构地区：[1]广西农业科学院甘蔗研究所,广西南宁530007 [2]农业部广西甘蔗生物技术与遗传改良重点实验室,广西南宁530007 [3]广西甘蔗遗传改良重点实验室,广西南宁530007

出　　处：《贵州农业科学》2017年第6期9-11,共3页Guizhou Agricultural Sciences

基　　金：国家星火计划项目"甘蔗试管苗生产简化技术与应用"(2015GA790007);广西农业科学院科技成果转化基金项目"甘蔗试管苗生产简化技术的中试示范"(农成转2015001);广西农业科学院科技发展基金项目"甘蔗试管苗光合自养生根技术的中试示范"(2015JZ04)

摘　　要：为筛选甘蔗无根试管苗最适种植基质,提高其成活率,降低生产成本,以甘蔗新品种桂糖44号为试材,采用单因素试验研究不同基质对其无根试管苗瓶外生根成活率的影响。结果表明:桂糖44号无根试管苗在不同基质上成活率依次为70%田园土+30%河沙(T_4)>田园土(T_3)>河沙(T_5)>70%黄泥+30%河沙(T_2)>黄泥土(T_1)>高肥力有机质(T_6);生长速依次为T_6>T_4>T_3>T_2>T_1>T_5;发根快慢依次为T_5>T_4>T_2>T_3>T_1>T_6,但发根时间差异不大;不同基质中以高肥力有机质最容易发霉,其次是田园土,黄泥和河沙不易发霉。甘蔗无根试管苗最适种植基质为70%黄泥+30%河沙。The effect of different substrates on rooting survival rate of GT44 （a new sugarcane variety） test-tube plantlets without roots was studied by a single factor test to screen the optimum cultivate substrate for test-tube sugarcane plantlets without roots, improve the survival rate and reduce production cost. Results： The survival rate of GT44 test-tube plantlets without roots cultured on different substrates is T4 （70% garden soil＋30% river sand））T3 （garden soil））T5 （river sand））T2 （70% yellow soil ＋ 30% river sand）〉T1 （yellow soil））T6 （organic matter with higher fertility）. The growth rate of GT44 testtube plantlets without roots cultured on different substrates is T6 〉 T4 〉 Ta 〉 T2 〉 T1 〉 T5. The rooting speed of GT44 test-tube plantlets without roots cultured on different substrates is T5〉T4 〉T2〉T3〉T1〉 T6 but there is no obvious difference in rooting time among six treatments. The organic matter with higher fertility gets mildewed easily, followed by garden soil, and yellow soil and river sand do not get mildewed easily. The optimum cultivate suhstrate for test-tube sugarcane plantlets without roots is 70%% yellow soil ＋ 30% river sand.

关 键 词：甘蔗 基质 桂糖44号 无根试管苗 成活率 生长速 

分 类 号：S566.1[农业科学—作物学]