This paper reviewed the heterosis performance of cotton,the research and application of insect-resistant hybrid cotton of F_1 and F_2 generation,and it also analyzed its application prospect and the existing problem in its application.
综述了棉花杂种优势的表现及抗虫杂交棉F1,F2代杂种优势的研究及应用,并对抗虫杂交棉的应用前景及存了问题进行了论述。
The effects of four cultivation factors(planting density,N,K and DPS application) on fiber quality of F_1 and F_2 generation of transgenic hybrid cotton were studied by means of quaternary quadratic regression rotational combination design.
采用四元二次回归旋转组合设计,对影响转基因杂交棉F1、F2纤维品质的密度、施氮量、施钾量和缩节胺施用量进行了综合研究,结果表明,缩节胺与密度是影响F1纤维品质指标的关键因子,而密度是影响F2纤维品质指标的关键因子。
In order to provide information that may help with the improvement of fry rearing techniques,the morphological observation during postembryonic development of Siberian sturgeon Acipenser baeri(F 2) were studied under rearing conditions.
对人工养殖西伯利亚鲟(F2)仔鱼的胚后发育形态进行了观察,从仔鱼刚出膜[0日龄,(9。
Analyse of the Number of Character of Fructification of Tomato Whth ISSR on Base of Expand of the F_2 Tomato (Lycopersicon Esculentum);
基于扩繁F2的番茄结果数的ISSR分析
Mapping QTLs Associated with Resistance to Scab Using an "Immortalized F_2" Population;
利用“永久F2”群体定位抗赤霉病QTL
A Statistical Study of the Ionospheric Bottomside Profile Parameters;
电离层F2层剖面参数的统计分析研究
Research Progress in New Protein PB1-F2 of Influenza Virus Type A
A型流感病毒新蛋白PB1-F2的研究进展
Let us now consider the damper attached to the mass of FigureF2.
现在我们考虑连在图F2的质量上的制动器。
They determined that F2 hybrids slightly outgrew the F1 hybrids.
他们认为杂种后F2代生长量稍大于F1代杂种。
The Lunar Atmospheric Tide and It Effects on the Ionospheric Es-layer and F2 Layer;
大气太阴潮汐及其对电离层Es层和F2层的影响
Study on Distant Cross Generations F1 and F2 by Distant Hybridization between Tobacco and Medicinal Plants;
烟草与药用植物科间杂种后代（F1、F2）的研究
Study on Surrounding Rock Control Technology of North Eight Entry Through F2 Big Fault in Taoyuan Mine;
桃园矿北八大巷过F2大断层围岩控制技术研究
Melon F2 Populations Traits Analyse and Genetic Map Primers Selected
甜瓜F2群体性状分析及遗传图谱引物筛选
Preliminary Study on Antibiotic Activity of the Extract From Antarctic Actinomycete NJ-F2
南极放线菌NJ-F2萃取物的抗菌活性初步研究
Evolution Analysis of the PB1-F2 Genes of Influenza A Viruses Isolated from China
A型流感病毒中国分离株PB1-F2基因进化分析
If you need more room to type a value in the property sheet, press SHIFT+F2 to open the Zoom box.
如果需要更多空间以在属性表中键入值，请按 Shift+F2 打开“显示比例”框。
Research on the Torsional Vibration and Dynamic Strength Check of Stand F2 of 1580 PC Rolling Mill Drive;
1580PC轧机F2机座主传动系统扭振研究和动态强度校核
Study on Immunogenicity and Attenuated Method of E.tenella Hybridization F2 Strain;
柔嫩艾美耳球虫杂交F2株致弱方法及免疫原性的研究
Molecular Identification of Ageratum Yellow Vein Virus Fujian Tobacco Isolate F2 and Its Encoded C5 Gene;
胜红蓟黄脉病毒福建烟草分离物F2及其编码的C5基因的分子鉴定
Analysis on Active Components and Fermentation Kinetics of Bioflocculant Produced by Bioflocculant-Producing Bacterium F2
絮凝菌F2产生物絮凝剂的发酵动力学及其活性成分分析
Treatment Technology of Mud and Water Gushing in F2-1 Fault of Dananshan Tunnel on Xiamen-Shenzhen Railway
厦深铁路大南山隧道F2-1断层突泥涌水处理技术