产量构成因素

• The results showed that : ( 1 ) a very significant increase in grain weight per plant ( gwpp ) of super high - yielding combinations mainly results from more panicles per plant ( ppp ) . ( 2 ) the order of contribution to gwpp was panicles per plant , filled grains per panicle ( fgpp ) , 1000 - grain weight ( kgw ) , spikelets per panicle ( spp ) , plumping degree ( pd ) filled grain rate ( fgr ) . ( 3 ) gwpp has positive correlation with ppp and fgpp at 0 . 01 significant level , with fgr at 0 . 05 significant level . ( 4 ) on the background of big panicle hybrid rice gwpp has positive partial correlation with ppp , kgw and pd at 0 . 01 significant level , which means any increase in these yield components can increase yield
  结果表明： ( 1 )不同产量水平大穗型组合产量的差异主要受单株穗数差异的影响； ( 2 )产量构成因素对产量的作用大小依次为：单株穗数每穗实粒数千粒重每穗总粒数充实度结实率； ( 3 )单株穗数和每穗实粒数与产量正相关达极显著水平，结实率与产量正相关达显著水平： ( 4 )单株穗数、千粒重和充实度与产量的偏相关为正，且达到极显著水平，说明在大穗的基础上，单株穗数的增加、千粒重和充实度的提高可以使产量显著增加。