摘要
试验通过对白魔芋三种自然繁殖材料作田间试验比较及其部分生理指标的测定,总结分析生产上采用白魔芋种子作为繁殖材料的可能性。研究表明:白魔芋种子的部分田间性状(叶幅/株高、叶柄直径、平均球茎重)虽不如球茎和根状茎,但三种繁殖材料中重要的经济指标——膨大倍数,种子的最高为24.52倍,远高于根状茎(5.68倍)和球茎(2.84倍)。说明白魔芋种子个体生产力强,可作为白魔芋繁殖材料来利用。从三种繁殖材料在展叶完全后部分生理指标来看,种子叶片的可溶性糖含量最高,为27.637mg/g,种子的根系活力明显高于球茎和根状茎,为1.45mg/g·h(FW),而种子叶绿素含量低于球茎,但大于根状茎,可溶性蛋白含量最低,仅有8.55mg/g,,其结果中表明,种子繁殖表现是出较高植株生活力,对其膨大倍数的增加起到了重要作用。
This experiment studies on three propagation materials of A. albus in field and comparison on physiological indexes and the possibility of using the seeds as reproduction material in fields was analyzed. The results show that some characters of seed, such as the ratio of breadth and height, petiole diameter, and average tuber weight, are not as good as tuber and rhizome, but swell coefficient, the most important economic index, of seed is the highest among three materials, being 24.52 times greater than those of rhizome （5.68 times） and tuber （2.84 times）. It suggests that seed has high productivity and can be used as propagative material. From the comparisons on some physiological indexes of three materials after their leaves unfold completely, such conclusions are drawn. The soluble sugar content of seed seedling leaves is the highest, 27.637mg/g. Root activity of seed is 1.45 mg/g·h （FW）, evidently higher than those of tuber and rhizome, showing that activity of seed roots are higher than those of tuber and rhizome. Chlorophyll content of seed is lower than that of tuber, but higher than that of rhizome. Soluble protein content of seed is lowest, only 8.55 %. The results indicate that the seeds have higher plant viability, its expansion has played an important role in the swell coefficient increase.
出处
《中国农学通报》
CSCD
2007年第2期282-284,共3页
Chinese Agricultural Science Bulletin
关键词
白魔芋
膨大倍数
生理指标
A. albus, Swell coefficient, Physiological index
