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肉苁蓉花序上种子粒重的空间分布研究

发表时间:2015-11-15  浏览量:1814  下载量:646
全部作者: 郑雷,赵敏,王信宏,郭玉海
作者单位: 中国农业大学农学与生物技术学院;云南省药物研究所
摘 要: 以肉苁蓉为试验材料,研究肉苁蓉花序上种子粒重的空间分布。研究结果表明:1)花序中部和下部生物量比花序上部高37.6%和81.0%;2)花序中部和下部中非结构性碳水化合物(non-structural carbohydrate,NSC)总累积量比花序上部高33.5%和58.8%,同时种子中NSC累积量高65.7%和71.0%;3)花序中部和下部种子重比花序上部高54.3%和58.7%,并且对单株种子产量的贡献率高13.3%和14.2%;4)与花序上部相比,花序中部和下部大粒种子(粒径>0.7 mm)所占比例高8.0%和11.5%,小粒种子(粒径<0.5 mm)所占比例低3.1%和5.6%,种子千粒重高18.5%和21.2%,种子饱满度高6.7%和8.9%,种子萌发率高18.0%和25.3%. 结果显示,肉苁蓉花序不同部位间的物质供应差异造成了肉苁蓉种子粒重在花序上的垂直分布。
关 键 词: 作物栽培学;肉苁蓉;花序;种子
Title: Study on spatial distribution of seed grain weight on Cistanche deserticola inflorescence
Author: ZHENG Lei, ZHAO Min, WANG Xinhong, GUO Yuhai
Organization: College of Agriculture and Biotechnology, China Agricultural University; Yunnan Institute of Materia Medica
Abstract: Cistanche deserticola was used to study the spatial distribution of seed grain weight on the C. deserticola inflorescence. The results showed that: 1) The biomass on middle and lower part of inflorescence increased 37.6% and 81.0% than the upper part of inflorescence; 2) The total accumulation of non-structural carbohydrate (NSC) on middle and lower part of inflorescence increased 33.5% and 58.8% than upper part of inflorescence, while the accumulation of NSC in seed on middle and lower part of inflorescence increased 65.7% and 71.0% than upper part of inflorescence; 3) The seed grain weight on middle and lower part of inflorescence increased 54.3% and 58.7% than upper part of inflorescence, while the contribution rate for seed yield per plant increased 13.3% and 14.2%; 4) Compared with the upper part of inflorescence, the proportion of large seeds (seed size> 0.7 mm) increased 8.0% and 11.5%, the proportion of small seeds (seed size<0.5 mm) reduced 3.1% and 5.6%, the 1 000-grain weight increased 18.5% and 21.2%, the seed plumpness increased 6.7% and 8.9%, the seed germination rate increased 18.0% and 25.3%. These findings suggested that the difference of nutrient supply among different parts of the inflorescence caused the vertical distribution differences of seed grain weight on the C. deserticola inflorescence.
Key words: crop cultivation; Cistanche deserticola; inflorescence; seed
发表期数: 2015年11月第21期
引用格式: 郑雷,赵敏,王信宏,等. 肉苁蓉花序上种子粒重的空间分布研究[J]. 中国科技论文在线精品论文,2015,8(21):2223-2228.
 
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