摘要
[目的]探究塔额垦区食用向日葵产量与主要经济性状之间的关系,找到提高产量潜力的主要性状因子。[方法]对16个食用向日葵品种的主要经济性状进行相关性、正态性检验、回归系数、通径分析和主成分分析。[结果]就产量构成因素来看,单盘籽粒数与产量关系不论在相关系数还是直接通径系数都较大,其次是千粒重的直接通径系数。产量性状的变异分析发现,食葵产量构成因素95%置信区间为:盘径19.76~21.11 cm,单盘籽粒704.74~808.14粒,千粒重214.81~233.09 g,结实率82.40%~85.40%。多元逐步回归分析显示,最优线性回归方程为y=-7468.284557+4.875448x_(1)+15.615314x_(2)+46.378728x_(3)。x_(1)、x_(2)、x_(3)与y的偏回归系数达到极显著。通径分析显示,直接通径系数的从高到低依次为单盘籽粒数、千粒重、结实率,表明食葵高产育种或栽培必须着重于单盘籽粒数的提高,同时兼顾千粒重和结实率易获得高产。[结论]在保证千粒重的基础上,主攻单盘籽粒数和花盘直径,协调优化两者之间的关系,才能提高本地区食用向日葵产量的潜力。
[Objective]The relationship between edible sunflower yield and main economic traits was discussed to find out the main limiting factors of yield increase potential in Tal Reclamation Area.[Method]Correlation,normality test,regression coefficient,path analysis and principal component analysis were carried out on the main economic traits of 16 edible sunflower varieties.[Result]In terms of yield components,the correlation coefficient or path coefficient between the number of grains per plate and yield was the largest,followed by the larger path coefficient of thousand-grain weight.Through the variation analysis of yield traits,the confidence interval of yield components was as follows:plate diameter 19.76-21.11 cm,single plate grain 704.74-808.14,thousand-grain-grain weight 214.81-233.09 g,seed setting rate 82.40-85.40.Through multiple stepwise regression analysis,the optimal linear regression equation is y=-7468.284557+4.875448x_(1)+15.615314x_(2)+46.378728x_(3).The partial regression coefficients of x_(1),x_(2),x_(3) and y are remarkable.Through path analysis,it is concluded that the direct path coefficient is in the order of single plate grain number>thousand-grain weight>seed setting rate,indicating that high-yield breeding or cultivation of sunflower must focus on the increase of single plate grain number,while taking into account the thousand-grain weight and seed setting rate is easy to obtain high yield.[Conclusion]On the basis of ensuring thousand-grain weight,the yield of edible sunflower in the region can be increased by increasing the number of grains per plate and the diameter of flower plate and coordinating the relationship between them.
作者
罗静静
王贺亚
艾海峰
李怀胜
LUO Jing-jing;WANG He-ya;AI Hai-feng(Agricultural Science Institute(Institute of Animal Science)of the Ninth Division of the Xinjiang Production and Construction Corps,Tacheng,Xinjiang 834601)
出处
《安徽农业科学》
CAS
2022年第22期15-18,共4页
Journal of Anhui Agricultural Sciences
基金
第九师科技特派员创新创业项目“特色作物高产栽培科技特派员团队创新创业”
兵团财政计划重点领域科技攻关项目“北疆边境团场食葵提质增效关键技术集成与示范”(2021AB011)。
关键词
塔额垦区
食葵
产量潜力
经济性状
相关分析
通径分析
主成分分析
Tal Reclamation Area
Edible sunflower
Yield potential
Economic character
Correlation analysis
Path analysis
Principal component analysis
