减库对荞麦籽粒灌浆特性及产量的影响

【目的】明确荞麦Fagopyrum esculentum Moench的源库关系。【方法】以荞麦品种丰甜1号为材料,在开花后7d进行减库处理（剪去未开花朵与花序）,以未处理的作对照,测定荞麦的主要农艺性状和代谢产物的含量,并使用Richards方程模拟种子的灌浆进程。【结果】灌浆中前期减库处理,荞麦叶片可溶性糖和叶绿素含量与对照差异不显著,成熟期株高、分枝数、主茎节数与对照差异不显著。减库处理有利于荞麦灌浆中前期籽粒碳水化合物的快速积累,但成熟期单株粒数和单株粒质量与对照差异不显著,且产量显著下降。减库处理和对照曲线方程的决定系数R2分别为0.996和0.992,拟合度较好。【结论】Richa...

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Published in华南农业大学学报 Vol. 38; no. 2; pp. 38 - 42
Main Author 赵权 刘昌敏 张余 宋毓雪 王雨 孔德章 梁成刚 黄凯丰
Format Journal Article
LanguageChinese
Published 贵州师范大学荞麦产业技术研究中心,贵州贵阳,550001%贵州师范大学荞麦产业技术研究中心，贵州贵阳550001 2017
贵阳护理职业学院，贵州贵阳550001
Subjects
Richards方程
产量
减库处理
灌浆特性
荞麦
Richards方程
产量
Richards ’ s equation
yield
荞麦
减库处理
sink-limiting treatment
Fagopyrum esculentum
灌浆特性
grain filling characteristic
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ISSN1001-411X
DOI10.7671/j.issn.1001-411X.2017.02.008

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Summary:【目的】明确荞麦Fagopyrum esculentum Moench的源库关系。【方法】以荞麦品种丰甜1号为材料,在开花后7d进行减库处理（剪去未开花朵与花序）,以未处理的作对照,测定荞麦的主要农艺性状和代谢产物的含量,并使用Richards方程模拟种子的灌浆进程。【结果】灌浆中前期减库处理,荞麦叶片可溶性糖和叶绿素含量与对照差异不显著,成熟期株高、分枝数、主茎节数与对照差异不显著。减库处理有利于荞麦灌浆中前期籽粒碳水化合物的快速积累,但成熟期单株粒数和单株粒质量与对照差异不显著,且产量显著下降。减库处理和对照曲线方程的决定系数R2分别为0.996和0.992,拟合度较好。【结论】Richards生长曲线能较好拟合荞麦灌浆进程;源不足或光合产物分配不合理是限制荞麦产量提高的重要因素,调控光合产物合成及有效分配是提高甜荞产量的有效途径。
Bibliography:ZHAO Quan1, LIU Changmin1, ZHANG Yu1 , SONG Yuxue1,2, WANG Yu1, KONG Dezhang1 , LIANG Chenggang1 , HUANG Kaifeng1（1 Technology Research Center of Buckwheat Industry, Guizhou Normal University, Guiyang 550001 ,China; 2 Guiyang Nursing Vocational College, Guiyang 550001, China）
Fagopyrum esculentum; sink-limiting treatment; grain filling characteristic; Richards ＇s equation; yield
Objective】To explore the source-sink relationship in buckwheat（ Fagopyrum esculentum Moench）. 【Method】The common buckwheat cultivar Fengtian 1 was selected as material. Treatment（ cutting the unopened flowers and inflorescences） was conducted at the 7th day after flowering,and nontreatment was used as control. The major agronomic characteristics and metabolite contents were measured,and the grain filling process was evaluated with Richards mathematical equation. 【Result】There was no significant difference in the contents of soluble sugar and chlorophyll between sink-limiting treatment and control during the early-middle grain filling,as
ISSN:1001-411X
DOI:10.7671/j.issn.1001-411X.2017.02.008