摘要
利用相关及通径分析的方法，对河北省早熟夏玉米品种区试资料进行分析。认为选育早熟、丰产、适应性广泛的玉米杂交种应重点对千粒重和穗行数进行正向直接选择；对穗位、秃尖进行负向直接选择；同时要协调好各性状间的遗传相关关系。对其它性状如出籽率、穗长、株高宜进行间接选择，选择不宜过严。
ThedataofearlymaturingsummermaizeinregionaltestinHebeiprovincewereanalyzedusingthemethodofcorrelationandpathanalysis.Theresultsshowedthatthepositiveimmediateselectionshouldbecarriedoutforthousandgrainweightandheadprogenyrowinbreedingofmaizehybridspecieswithcharactersofearlymaturing,highyieldandwideadaptability,andthenegativeimmediateselectionforbaldheadandspikelocality.Meanwhile,thegeneticrelationshipbetweencharactersshouldbepaidmuchattentionto.Theindirectselectionshouldbeappliedtoothercharacterssuchasrateofseed,lengthofearandheightofsproutsandsoon,butnottobestrict.
关键词
农艺性状
相关分析
通径分析
玉米
育种
earlymaturingsummermaize
agronomiccharacter
correlationanalysis
pathanalysis
