旱作苦荞麦籽粒产量与主要性状的相关分析

Correlation Analysis between Grain Yield and Main Character of Tartary Buckwheat in Dry Land

试验以14个全国苦荞品种为材料,进行籽粒产量相关性状的分析,结果表明,主要相关性状对籽粒产量影响的顺序为:株高>主茎节数>出苗日数>单株粒重>单株粒数>现蕾至开花天数>生育日数>千粒重>出苗至现蕾天数>一级分枝。籽粒产量与开花至成熟天数关系不密切。增加株高、主茎节数、单株粒重、单株粒数是增加籽粒产量的主要途径。选择大粒和提高现蕾至开花天数是提高籽粒产量的重要途径。通过增加出苗至现蕾天数和一级分枝数可间接提高籽粒产量。出苗天数增加可导致籽粒产量减少。

Fourteen tartary buckwheat were used in this study to conduct a analysis on some characters relevant to grain yields.Among the eleven characters observed,the sequense of their role on grain yields was as follows：plant heightnodal numbers of main stemdays of seedlingplant grain weightplant grain numbersdays of squaring to floweringdays of growingthousand kernel weightdays of seedling to squaringnumbers of first branchy stem.Between grain yields and days of flowering to ripening was small relations.Grain yields can be increased by four important ways,increasing plant height,nodal numbers of main stem,plant grain weight and plant grain number.Selecting big grain and days of squaring to flowering was effective ways to impove grain yields.To increase days of sleeding to squaring and numbers of first brancy stem could improve grain yields.To increase emergence days could lead to reduction of grain yields.