| 1. | Breeding of big ear type corn hybrid yudan 101 with good quality and high yield
优质高产大穗型玉米杂交种豫单101的选育 |
| 2. | A preliminary study on morphologic breeding of northern large - panicle type super japonica hybrid rice
北方大穗型超级杂交粳稻形态育种初探 |
| 3. | Evaluation on agronomic characters of local rice germplasm with heavy spike and big grain in guizhou
贵州地方稻种大穗大粒型种质资源性状评价 |
| 4. | Study on the breeding of the new hybrid suyu 19 with high yield , good quality , short mature time and big ear
高产优质早熟大穗型玉米新品种苏玉19选育研究 |
| 5. | We have already noticed that the high - yield characters of big - ear - type maize has not yet been brought into full play
我们已经注意到还没有充分发挥大穗型玉米的高产特性。 |
| 6. | Influence of density and topdressing time of nitrogen fertilizer on carbohydrate metabolism in leaf and grain of large - ear cultivar of high - yielding winter wheat
密度及追氮时期对大穗型小麦旗叶及子粒碳水化合物代谢的影响 |
| 7. | The parents of ril - 8 are excellent germplasm in wheat breeding with large ear and good yield traits in chuan35050 and excellent yield traits in shannong483
其中，川35050是大穗材料，综合性状优良，山农483综合性状优异，都是在育种中有较高利用价值的材料。 |
| 8. | With two high - yielding hybrid rice combinations shanyou 63 and liangyoupeijiu as cheek , 18 combinations with big panicle are chosen to study the relationships between yield components and yield
摘要以汕优63和两优培九作对照， 18个株叶形态较好的大穗型两系杂交稻组合作为试验材料，研究分析了产量构成因素与产量的关系。 |
| 9. | These plant - type characters of " yedan 12 " resulted in an improving crown - canopy structure which favoring conditions of aeration and solar penetration , so suitable enlargement of planting density would enable maize plants to extending their active photosynthetic area which promoted bigger ears with more kernels and then attained high yield of grains per plant
掖单12这种株型特点改变了植冠构造，更有利于通气条件和阳光透射，这样适当增大植株密度将使玉米植株扩大活性光合作用面积，促成大穗、穗粒数更高，因此单株籽粒产量更高（表9 ） 。 |
| 10. | 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。 |
