结实率 meaning in English
maturing rate
seed set propagation coefficient
Examples
- ( 3 ) the value of p / 0 of c . praecox is 2847 . 3 + 1125 . 0 , and the total value of oci is 3 . with the above results , pollen germination rate and seed set rate , all shows that breeding system of c . praecox is facultative hybridization . the breeding system of c . nitens is similar to c . praecox , but it is higher in proportion of self - pollination than that of c . praecox
( 3 )蜡梅p / 0值为2847 . 3 1125 . 0 、 oci累计分值等于3 ，与不同处理的花粉萌发率和结实率的结果一样，都显示蜡梅繁育系统为兼性异交类型；亮叶蜡梅繁育系统同蜡梅相似，但亮叶蜡梅的自交比例相对较高 - Seventy - nine improved wheat cultivars ( lines ) including some related parents were corssed with rye to detect the difference of crossability among wheat genotypes and the developing tendency of crossability during the cultivar renewing period in shandong province , the results expressed that crossability of improved cultivars with rye were significantly lower than that of the check ( chinese spring ) , and there were 3 cultivars with a seedset of more than 50 % , 4 cultivars with the seed - set of 30 % - 50 % , 8 ones with that of 10 % - 30 % , 50 ones with the seed - set of less than 5 % , and the other 14 cultivars with the seed - set of 5 % - 10 % ; the mean crossability between wheat and rye decreased with the renewing of cultivars in shandong , and the number of cultivars with the seed - set of more than 50 % and 30 % - 50 % also decreased , but that with the seed - set of less than 5 % increased gradually during the renewing period ; pedigree analysis revealed that the crossable gene of the tested cultivars might come from 3 landraces ( youzimai , mazhamai and huixianhong ) , laizhou 953 , 8641012 , yannong 15 et al were improved wheat cultivars with both excellent agronomic traits and high crossability with rye
以79个改良小麦品种(系)与黑麦进行杂交，研究普通小麦品种与黑麦杂交亲和性的差异及其亲和性在品种更新、更换过程中的演变趋势，结果表明：供试改良小麦品种与黑麦的杂交亲和性显著低于对照中国春；结实率大于50 %的品种3个，占供试品种的3 . 8 % ，结实率介于30 % - 50 %之间的品种4个，占5 . 1 % ，结实率介于10 % - 30 %之间的品种8个( 10 . 1 % ) ，结实率小于5 %的品种50个，占63 . 3 % ，另外，结实率介于5 % - 10 %之间的品种14个，占17 . 7 % ;普通小麦与黑麦的杂交亲和性随着品种的更新、更换呈下降趋势，平均结实率大于50 % 、介于30 % - 50 %的品种数均呈下降趋势，而结实率5 %的品种数呈上升趋势；系谱分析表明，供试改良品种的亲和性大都来源自蚰子麦、蚂蚱麦、辉县红3个地方普通小麦品种；莱州953 、 8641012 、烟农15等是亲和性和综合性状都较好的改良小麦品种(系) 。 - The study on the characteristics of development and seed setting of different spikelet and floret positions was important for the realization of big - spike - cultural - goal with more spikelets and grains . with both the winter type ( wv ) and spring type ( sv ) varieties sown at different dates , it was found that the greater seed setting capacity of spikelets resulted in more grain number of spike . the trend of differences in grain weight per spikelet between the different sowing dates and varieties was similar to that of grain number . the correlation between the average grain weight of middle spikelets and lower spikelets and the grain weight per spike was highly significant . the environmental changes resulted from different sowing dates mainly effected the middle spikelets development , even though the differences between wv and sv were represented in every spikelet positions . the grain weight on the second floret position was most sensitive to the development status of wheat plant and environmental changes , and could represent the yielid potential of the whole spikelet . the results showed that the enhancement of seed setting of the middle spikelets ( from 5th to 15th ) and the grain development from the first to third floret positions was a key to realize big - spike and grain
确定小麦不同小穗位和小花位发育与结实特性是实现大穗多粒的重要前提.本文通过对冬、春性小麦品种分期播种试验得出,较高的小穗结实力是增加穗粒数的重要因素.不同播期、品种之间,小穗粒重和粒数呈现相同的变化趋势.中部以及基部小穗粒重与穗粒重之间呈高度正相关.体现环境差异的播期效应以对中部小穗发育的影响为主,而冬、春性品种的基因型差异可反映在各个小穗位上.第2小花位的子粒发育状况反映整个小穗的生产能力.结果表明,促进中部优势小穗(第5 15小穗)结实和第1 3小花位子粒发育是提高小花结实率和穗粒重的关键 - This paper firstly focused on and evaluated the pollination characteristics of c . praecox , in half - natural habitat of nanjing . we investigated flowering phenology , flowering patten , pollen viability , stigma receptibility , species of visitors , visiting rate of visitors and their foraging behavior . and we also investigated its breeding system , including pollen - ovule ratio ( p / 0 ) , out - crossing index ( oci ) , pollen grains deposited in stigmas , pollen germination rate and seed set rate with different treatments , from 2002 to 2004
试验分别在2002 - 2003年和2003 - 2004年冬季进行，研究内容包括：花期物候观察、花部形态观察和统计、雌雄配子体功能测定、访问昆虫种类、访问行为、访花频率和效率；同时对蜡梅繁育系统进行了检测，检测内容包括花粉胚珠比( p / 0 ) 、杂交指数( oci )及不同处理花粉萌发率及结实率检测等等，同时还进行了蜡梅与亮叶蜡梅传粉过程比较。 - The results showed that the field temperature were lower than those measured at the nearby meteorological station during high temperature weather , irrigation could lower the field temperature , lessen the number of days damaged by high temperature , increase the seed - setting percentage and grain yield , and the higher the irrigating level was , the greater the effect became
结果表明，高温天气期间田间温度低于气象站测定温度，灌水能降低田间温度，减少田间高温危害天数，提高结实率和产量，且随着灌水深度的增加，效果越明显。