The yield characters and quality characters of several new cotton varieties in the mid-south area of Hebei Province were comprehensively evaluated in this pa- per. In different ecological environments, the single-boll...The yield characters and quality characters of several new cotton varieties in the mid-south area of Hebei Province were comprehensively evaluated in this pa- per. In different ecological environments, the single-boll weight of tested cotton vari- eties had the biggest variation coefficient among yield characters and micronaire value had the biggest variation coefficient among fiber quality characters. Path analy- sis indicated that the direct path coefficients of various characters had the flowing order, lint percentage〉 number of bolls per plant〉 single-boll weight〉 seed index among yield components and uniformity index 〉 fiber specific strength〉 micronaire value〉 elongation rate〉 upper half staple length among fiber quality characters. Principal component analysis indicated that the top three principal components contributed 8.263% of accumulated variance, basically reflecting the vast majority of informations of 10 main characters in tested cotton varieties.展开更多
Reading and comprehension are critical intellectual skills which have to be mastered for any worthwhile academic engagement. However, the tendency to equate mere literacy to these skills has led many people to take th...Reading and comprehension are critical intellectual skills which have to be mastered for any worthwhile academic engagement. However, the tendency to equate mere literacy to these skills has led many people to take the skills for granted. This paper addresses the issue of reading comprehension through a painstaking methodical exploration of the technicalities involved to aid a mastery of the art. It does so with practical examples which are useful for self-teaching on the part of learners.展开更多
基金Supported by Project of Cotton Industry Technology System in Hebei of National Science-technology Support Plan(2009BADA3B01)~~
文摘The yield characters and quality characters of several new cotton varieties in the mid-south area of Hebei Province were comprehensively evaluated in this pa- per. In different ecological environments, the single-boll weight of tested cotton vari- eties had the biggest variation coefficient among yield characters and micronaire value had the biggest variation coefficient among fiber quality characters. Path analy- sis indicated that the direct path coefficients of various characters had the flowing order, lint percentage〉 number of bolls per plant〉 single-boll weight〉 seed index among yield components and uniformity index 〉 fiber specific strength〉 micronaire value〉 elongation rate〉 upper half staple length among fiber quality characters. Principal component analysis indicated that the top three principal components contributed 8.263% of accumulated variance, basically reflecting the vast majority of informations of 10 main characters in tested cotton varieties.
文摘Reading and comprehension are critical intellectual skills which have to be mastered for any worthwhile academic engagement. However, the tendency to equate mere literacy to these skills has led many people to take the skills for granted. This paper addresses the issue of reading comprehension through a painstaking methodical exploration of the technicalities involved to aid a mastery of the art. It does so with practical examples which are useful for self-teaching on the part of learners.
