CAJ | 학술논문

以10个产量14250 kg/hm2以上的高产组合为研究对象，将穗粒重分为5个级别，分析其在群体中的分布状态，以及不同穗粒重级别果穗的穗粒数和百粒重的变异及其对玉米产量的影响。结果表明：单穗粒重在群体中从低到高连续分布。单穗粒重150 g以下、151～200 g、201～250 g、251～300 g、301～350 g级别的穗数占群体穗数的比例分别为0.66％、8.31％、40.86％、42.19％和7.97％，其中201～300 g 穗粒重级别的穗数比例为83.05％，是影响产量的关键因素；201～250 g穗粒重级别的穗数与产量呈显著负相关，单穗粒数与产量、穗百粒重与产量无明显的相关性；251～300 g穗粒重级别的穗数与产量呈极显著正相关，其穗粒数和穗百粒重与产量无明显的相关性，总粒数与产量呈极显著正相关；不同级别穗粒重对产量高低的影响，是通过其级别在群体中的比例大小来表达。201～250 g穗粒重构成高产的起始单株生产力，251～300 g穗粒重构成高产潜力。201～300 g穗粒重的穗数在群体中的比例大小，可作为新组合高产的选择依据。
이10개산량14250 kg/hm2이상적고산조합위연구대상，장수립중분위5개급별，분석기재군체중적분포상태，이급불동수립중급별과수적수립수화백립중적변이급기대옥미산량적영향。결과표명：단수립중재군체중종저도고련속분포。단수립중150 g이하、151～200 g、201～250 g、251～300 g、301～350 g급별적수수점군체수수적비례분별위0.66％、8.31％、40.86％、42.19％화7.97％，기중201～300 g 수립중급별적수수비례위83.05％，시영향산량적관건인소；201～250 g수립중급별적수수여산량정현저부상관，단수립수여산량、수백립중여산량무명현적상관성；251～300 g수립중급별적수수여산량정겁현저정상관，기수립수화수백립중여산량무명현적상관성，총립수여산량정겁현저정상관；불동급별수립중대산량고저적영향，시통과기급별재군체중적비례대소래표체。201～250 g수립중구성고산적기시단주생산력，251～300 g수립중구성고산잠력。201～300 g수립중적수수재군체중적비례대소，가작위신조합고산적선택의거。
Based on the data of 10 high-yield maize combinations, which production were above 14 250 kg/hm 2, ear grain weight was divided into 5 levels, the distribution of different ear grain weight in groups, the variations of the ear grain number and 100-grain weight of different ear grain weight levels, and the effects on yield were studied.The results showed that the distribution of ear grain weight in groups was continuous from low to high .The proportion of the ear number of ear grain weight below 150 g, 151-200 g, 201-250 g, 251-300 g and 301-350 g accounted of the population respectively were 0.66%, 8.31%, 40.86%, 42.19% and 7.97%.201 -300 g ear grain weight was the critical factor affecting the yield.There was a significant negative correlation between the ear number of 201-250 g ear grain weight and yield, but there were no correlations between ear grain number and yield, 100-grain weight and yield.There was a significant positive correlation between ear number of 251 -300 gear grain weight and yield, while there were no correlations between ear grain number and yield , 100g-rain weight and yield, but the total number of grains was significantly positively correlated with yield .The effects of differentlevels of ear grain weight on yield was expressed by its proportion in the population .201-250 g ear grain weight constituted the individual productivity of high yield, 201-250 g ear grain weight composed the high yield potential.The proportion of the ear number of 201-300 g ear grain weight in the population could be used as the selection criteria of high yield of new combinations.