北方农业学报 ›› 2021, Vol. 49 ›› Issue (1): 47-52.doi: 10.12190/j.issn.2096-1197.2021.01.07

• 作物栽培·生理生化 • 上一篇    下一篇

不同外源激素对甜荞开花结实及光合性能的影响

金晓蕾1, 罗中旺1, 谢锐1,2, 辛万和1, 房永雨1   

  1. 1.内蒙古自治区农牧业科学院,内蒙古 呼和浩特 010031;
    2.河北农业大学 农学院,河北 保定 071001
  • 收稿日期:2020-11-25 出版日期:2021-02-20 发布日期:2021-03-23
  • 通讯作者: 罗中旺(1961—),男,副研究员,主要从事荞麦育种与栽培的研究工作。
  • 作者简介:金晓蕾(1988—),女,助理研究员,博士,主要从事荞麦育种与栽培的研究工作。
  • 基金资助:
    内蒙古自治区农牧业科学院青年创新基金项目(2017QNJJN12);内蒙古农牧业创新基金项目(2017CXJJN08, 2020CXJJN04)

Effects of different exogenous hormones on flowering,fruiting and photosynthetic parameters in common buckwheat

JIN Xiaolei1, LUO Zhongwang1, XIE Rui1,2, XIN Wanhe1, FANG Yongyu1   

  1. 1. Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences,Hohhot 010031,China;
    2. College of Agronomy,Agricultural University of Hebei,Baoding 071001,China
  • Received:2020-11-25 Online:2021-02-20 Published:2021-03-23

摘要: 【目的】 揭示不同外源激素对提高甜荞结实粒数及光合性能的影响。【方法】 以品种北早生和赤甜荞1号为试验材料,利用不同浓度(100、150、200 mg/L)的多效唑(PP333)和6-苄基腺嘌呤(6-BA)在甜荞幼苗期不同时间进行处理,分析不同处理对花粉育性、柱头可授性、光合参数、甜荞开花数及结实粒数的影响。【结果】 与对照(清水)相比,PP333处理浓度为100 mg/L时增加结实粒数最多,2个品种平均较对照增加20.3%;6-BA处理浓度为150 mg/L时增加结实粒数最多,2个品种平均较对照增加47.9%。喷施PP333和6-BA在不同时期净光合速率、盛花期胞间CO2浓度均较对照增加;喷施PP333蒸腾速率较对照增加、气孔导度较对照降低,喷施6-BA与喷施PP333效果相反。【结论】 在甜荞第2片真叶期进行100 mg/L PP333或150 mg/L 6-BA处理可以提高花粉可育率、柱头可授性和单株结实数,提高光合性能。

关键词: 甜荞, 结实, 花粉育性, 柱头可授性, 光合性能

Abstract: 【Objective】 To reveal the effects of different exogenous hormones on the seed number and photosynthetic performance in common buckwheat.【Methods】 Varieties of “BZS” and“CT1” as experimental materials and treated with different concentrations(100,150,200 mg/L) of paclobutrazol(PP333) and 6-benzyl adenine(6-BA) at different time of seedling stage to study the effects of different treatments on pollen fertility,stigma receptivity,photosynthetic parameters,flowering number and the seed number of common buckwheat.【Results】 Compared with the control(water),PP333 treatment at 100 mg/L and 6-BA at 150 mg/L,the seed numbers reached maximum increased respectively 20.3% and 47.9%. The net photosynthetic rate and intercellular CO2 concentration during full booming stage were both increased when spraying PP333 and 6-BA compared with CK at different stage of common buckwheat. The transpiration rate was increased and stomatal conductivity was decreased when spraying PP333 compared with CK but the effect of spraying 6-BA was opposite to that of spraying PP333.【Conclusion】 In the second true leaf stage of common buckwheat,PP333 100 mg/L or 6-BA 150 mg/L treatments could improve pollen fertility,stigma receptivity,seed number per plant,and photosynthetic performance.

Key words: Common buckwheat, Fruiting, Pollen fertility, Stigma receptivity, Photosynthetic performance

中图分类号: 

  • S517