海藻源物质对低温胁迫蔬菜生长的效应

将用紫菜和海带提取物分别处理的黄瓜及空心菜种子,培养成幼苗后,经低温处理并继续培养6 d.与对照组相比,对于黄瓜,在0℃处理下,200倍海带液使其主根长及茎长分别提高59.26%、25.00%,200倍紫菜液根系鲜重提高42.35%;在5℃处理下,600倍紫菜液使其主根长提高12.73%,根系鲜重提高92.61%,茎长提高11.9%,地上部鲜重提高42.96%.对于空心菜,在0℃处理下,800倍紫菜液使其主根长及地上部鲜重分别提高38.10%、53.00%,800倍海带液使其茎长提高11.43%;在5℃处理下,600紫菜液使其主根长提高23.53%,根系鲜重提高21.61%,地上部鲜重提高10倍.

Effect of Liquid from Seaweed on the Vegetable Growth under Low Temperature Stress

The experiment in the effect of the liquid from seaweed on the seed of Cucumis saticus L.and Ipomoca aquatica was conducted,and then the young plant was grown in low temperature(0 ℃ and 5 ℃).The result indicated that,compared with the CK,for Cucumis saticus L.,200 times liquid of kelp can enhance the length of major root and stem up to 59.26% and 25% and laver,the weight of root,42.35% under 0 ℃ treatment.Under 5 ℃ treatment,600 times liquid of Porphyra haitanensis can enhance the length of major root up to 12.73%;the weight of root,92.61%;the length of shoot,11.9% and the weight of shoot,42.96%.For Ipomoca aquatica,800 times liquid of Porphyra haitanensis can enhance the length of major root and the wight of shoot up to 38.1% and 53.0%;800 times liquid of kelp can enhance the wight of shoot,11.43%.And under 5 ℃ treatment,600 times liquid of Porphyra haitanensis can enhance the length of major root up to 23.53%;the weight of root,21.61% and by 10 times in the weight of shoot.