搜索结果: 1-15 共查到“作物学 Upland”相关记录41条 . 查询时间(0.109 秒)
在这项研究中，我们对七个优良棉花品种的PAV模式进行了综合分析，发现大部分PAV小于20kb,小于40kb的PAV总共有1.27Gb，占到整个基因组的50.7%，大于40kb的PAV共有15430个，共有1.23Gb，占到整个基因组的49.3%。基因结构分析发现大部分缺失型PAV不在内含子区域或者外显子区域，说明这些PAV可能不对基因功能起直接作用。多倍性PAV主要定位在内含子区域，并且紧邻外显子...
Transcriptome and QTL analyses reveal candidate genes for fiber quality in Upland cotton
棉花 纤维发育 QTL 转录组 表达基因
2024/5/17
本研究基于前期得到的1个F2群体、1个重组自交系群体和2个永久回交群体得到了15个在多群体或者多年分稳定检测的QTL位点。基于转录组测序，在两亲本间发育10天的纤维进行差异基因鉴定，得到了780个差异基因。通过对QTL和转录组结果联合分析，在9个QTL区间内得到31个基因，其中有9个在纤维中优异表达的基因。在这9个基因中，有7个基因在纤维伸长期高量表达，2个基因在纤维次生壁加厚期高量表达。该研究为...
Extensive intraspecific gene order and gene structural variations in upland cotton cultivars
陆地棉 全基因组 比较分析遗传变异
2024/4/16
棉花是重要的工业原材料和天然纤维材料，相比于其他作物，陆地棉的遗传多样性极低，解析其形成原因，对棉花的遗传改良具有重要意义。研究人员通过对两种不同基因型的陆地棉进行全基因组比较分析，发现A08染色体上存在着大片段的遗传变异。该倒位能够将已发表的陆地棉核心种质资源材料分为两类，与利用SNP基因型重构的进化树的分类和主成分分析结果高度一致，表明陆地棉种内可能产生了分化。利用人工创制的群体和陆地棉核心种...
Evaluation of yields of seven upland rice (Oryzae sativa) cultivars sown by three methods in Anyigba, Kogi State, Nigeria
Sowing method establishment count plant height
2011/1/12
Yield is the characteristic by which a cultivar is commonly judge. A cultivar may be considered satisfactory only if it is able to produce a good yield in comparison to others at various times and in ...
Dry Matter Productivity of High Biomass Sugarcane in Upland and Paddy Fields in the Kanto Region of Japan
Erianthus spp., sorghum Dry Matter Productivity High Biomass Sugarcane
2010/10/25
Eight high biomass sugarcane clones and two commercial sugarcane cultivars were planted in upland and paddy fields in Tsukuba in 2003-2005 to identify a new crop suitable for abandoned
paddy fields i...
Present Situation of Tractor Implement Row-following Operation in Large-scale Upland Farming
crop management tractor implements row spacing
2010/12/2
This study was to examine farmer's working conditions and the accuracy of tractor implements in following rows in a field, and to consider the most appropriate control speed of such implements as prel...
Optimization of in vitro direct regeneration of multiple shoots in upland cotton (Gossypium hirsutum L.) cv. Iranian varieties
Regeneration benzylaminopurine kinetin zeatin cotton
2011/1/11
A direct shoot regeneration protocol was optimized for upland cotton (Gossypium hirsutum L.). Three cultivars of cotton namely Bakhtegan, Zeta-2 and their hybrid (Bakhtegan×Zeta-2) were used to study ...
Genetic Studies of Two QTLs for Rice Stripe Resistance Identified in Japanese Upland Rice Line, Kanto 72
near-isogenic lines quantitative trait loci rice breeding
2010/10/25
Quantitative trait locus (QTL) analysis was performed to identify the chromosomal region controlling rice stripe virus (RSV) resistance in Japanese upland rice, Kanto 72. As a result, two QTLs were de...
Genotypic Variation in Ability to Recover from Weed Competition at Early Vegetative Stage in Upland Rice
Improved cultivar Laos Recover from weed competition Slash-and-burn Traditional cultivar Upland rice
2010/3/4
In northern Laos, weeds are a major constraint to upland rice production in slash-and-burn systems. Two experiments were conducted to assess genotypic variation in ability to recover from weed competi...
Agronomic and socio-economic constraints to high yield of upland rice in Tanzania
NERICA adaptability soil fertility upland rice agro-ecosystems productivity
2011/1/10
A field survey was conducted in March 2009 in upland rice growing agro-ecosystem of four districts in Tanzania namely Ulanga, Kyela, Morogoro and Korogwe to investigate the agronomic and socio-economi...
Estimating crop coefficient model for upland rice (NERICA) under sprinkler irrigation system
Crop coefficient upland rice sprinkler irrigation
2011/1/10
Efficient crop coefficient (Kc) estimation is very important to adequately determine water use of a selected crop. In this study, crop coefficient was determined for upland rice (NERICA) under a sprin...
Excess Moisture Injury of Soybeans Cultivated in an Upland Field Converted from Paddy : III. Foliar application of urea as countermeasure against excess moisture injury
Dry matter production Excess moisture injury Foliar application of urea Nitrogen fixation
2009/8/6
The purpose of this experiment was to examine whether the foliar application of urea is effective as a countermeasure against excess moisture injury of soybeans [Glycine max (L.) Merr.]. During the fl...
Excess Moisture Injury of Soybeans Cultivated in an Upland Field Converted from Paddy : V. Supplemental nitrogen application as a countermeasure against excess moisture injury
Excess moisture injury Flower shedding Nitrogen fixation Photosynthetic rate Pod shedding Seed yield Soybean
2009/7/31
The purpose of this experiment was to examine whether the application of nitrogen (N) fertilizer as ammonium sulfate is an effective countermeasure against excess moisture injury of soybeans [Glycine ...
Growth of Three Rice Cultivars (Oryza sativa L.) under Upland Conditions with Different Levels of Water Supply
Grain yield Harvest index Upland rice Water productivity Water supply Yield potential
2009/7/24
Upland rice production has great potential as a water-saving form of agriculture if yield can be increased and stabilized across a range of environments with different levels of water supply. The obje...
Growth of Three Rice (Oryza sativa L.) Cultivars under Upland Conditions with Different Levels of Water Supply
Biomass production Deep rooting Nitrogen uptake Water-use efficiency
2009/7/24
The total water supply (irrigation plus rainfall) would determine biomass production. This study aimed to elucidate the effects of water supply and cultivar differences on the dry matter production o...