Relationship between fiber cotton grade and some related characteristics of long and extra-long staple Egyptian cotton varieties (Gossypium barbadense. L).
Relationship between fiber cotton grade and some related characteristics of long and extra-long staple Egyptian cotton varieties (Gossypium barbadense. L).
复制标题
DOI：
10.21608/ajs.2020.28192.1197
复制
发表时间：
2020-01-01
影响因子：
--
通讯作者：
Ebaido, I. A.
中科院分区：
文献类型：
--
作者：
Hussein, M. G.;El-Marakby, A. M.;Ebaido, I. A.
本研究使用的材料是四个埃及棉花商业品种，其中两个(Giza 86和Giza 90)属于长绒类，其他(Giza 88和Giza 92)属于超长绒类。在每个品种中，使用了9个皮棉等级，即：完全良好(FG)、良好/完全良好(G/FG)、良好(G)、完全良好/良好(FGF/G)、完全良好/良好(Fg)、良好/完全良好(GF/Fg)、良好(GF)、完全公平/良好(FF/GF)和完全公平(FF)。因此，完全良好(FG)是最高质量等级，其他等级逐渐降低；即完全良好(FF)是最低等级。使用棉花分级系统版本5(CCS-V5)对纤维特性进行了测定。收集的数据包括：反射率(Rd%)、黄度(+b)、杂质%、灰尘%、纤维碎片%、总杂质%、No.棉结和马克隆值。除吉杂92黄度(+b)和纤维碎片率外，长绒棉和超长绒棉品种的9个等级长绒棉和超长绒棉品种各性状的季节均方差均达到极显著水平。对于所有研究性状，4个棉花品种和每个品种的9个皮棉等级的平均表现值达到极显著水平，很明显，研究品种之间和每个品种内的纤维皮棉等级之间存在显著的遗传差异。黄化度、杂质含量、尘埃含量、纤维碎片含量、总杂质含量(杂质、灰尘、纤维碎片)和棉结数量逐渐增加，反射度(RD%)和马克隆值逐渐降低，且从FG级向FF级的转移达到极显著水平。纤维棉等级与黄度、含污量、粉尘、总含污率、NO含量呈极显著负相关。纤维棉等级与反射度、马克隆值呈极显著正相关。纤维棉的总含污率、马克隆值、反射度及其交互作用对纤维棉等级的贡献和影响最大。此外，这些特性及其联合作用也是影响分级人员在评定棉花等级时的个人判断的主要因素。
The materials used in this study were four commercial varieties of Egyptian cotton; two (Giza 86 and Giza 90) belonging to the long staple class and the others (Giza 88 and Giza 92) belonging to the extra-long staple category. Within each variety, nine lint cotton grades namely: Fully Good (FG), Good/Fully Good (G/FG), Good (G), Fully Good Fair/Good (FGF/G), Fully Good Fair (FGF), Good Fair/Fully Good Fair (GF/FGF), Good Fair (GF), Fully Fair/Good Fair (FF/GF) and Fully Fair (FF) were used. Thus Fully Good (FG) is the top quality grade and the others are progressively lower; i.e. Fully Fair (FF) is the lowest grade. Fiber properties were measured by using the Cotton Classifying System Version-5 instrument (CCS-V5). Data collected for the following characteristics were: reflectance degree (Rd %), yellowness degree (+b), trash%, dust%, fiber fragments%, total trash%, No. of neps and Micronaire value. Mean squares due to all nine grades of long and extra-long staple cotton varieties in combined analysis were highly significant over seasons for all studied characters except yellowness (+b) and fiber fragments% in Giza 92. Highly significant mean performance values of four cotton varieties and nine lint grades for each variety for all studied characters, it became clear that there were significant genetically differences between studied varieties and fiber cotton lint grades within each variety. Gradually increased for yellowness degree, trash%, dust%, fiber fragments%, total trash% (trash, dust, fiber fragments) and number of neps, while gradually decreased for reflectance degree (Rd%) and micronaire value with significant level as transfer for all tested varieties from (FG) grade down to the (FF). All studied varieties showed highly significant negative correlation between fiber cotton grade with yellowness, trash, dust, total trash% and No. of neps, while highly significant positive correlation between fiber cotton grade with reflectance degree and micronaire value. Total trash% and micronaire value as well as reflectance degree and their interactions were the most contributing and influencing of fiber cotton grades. Also these properties and their joint effects are prevailing factors which affect the personal judgment of the grader at evaluating the cotton grade.