搜索结果: 1-15 共查到“作物学 oryza sativa L”相关记录161条 . 查询时间(0.121 秒)
Artificially Selected Grain Shape Gene Combinations in Guangdong Simiao Varieties of Rice (Oryza sativa L.)
Guangdong Simiao varieties Grain shape Fixation index Allele mining Molecular breeding Rice
2023/4/21
Grain shape is a key trait in rice breeding. Although many QTLs and genes of grain shape have been identified, how different combinations of alleles of these genes affect grain shape is largely unknow...
白建江（2021）SLAF-Based linkage map construction and QTL mapping of nitrogen use efficiency in rice (Oryza sativa L.) （图）
氮素 水稻 Nipponbare OM052 氮肥利用率
2023/2/27
氮素是植物生长发育所需的大量元素之一，水稻是我国的主要粮食作物，水稻生产对氮的需求仅次于水，是构成水稻生长成本的主要部分。目前，水稻氮肥表观利用率只有39%，即施氮肥量的50%以上残留在环境中。因此，在保证产量不减的基础上如何提高氮肥的利用效率，减少氮肥的使用量是我国农业可持续发展亟待解决的重要问题。
The Candidate Genes Underlying a Stably Expressed QTL for Low Temperature Germinability in Rice (Oryza sativa L.)
Rice Low temperature germinability Quantitative trait locus Candidate gene Genomewide association study
2023/4/21
Background: Direct seeding is an efficient cultivation technique in rice. However, poor low temperature germinability (LTG) of modern rice cultivars limits its application. Identifying the genes assoc...
Physiological and genome-wide gene expression analyses of cold-induced leaf rolling at the seedling stage in rice (Oryza sativa L.)☆
Rice (Oryza sativa L.) Cold-induced leaf yellowing Cold-induced leaf rolling Physiological analysis
2023/4/21
Leaf rolling and discoloration are two chilling-injury symptoms that are widely used as indicators for the evaluation of cold tolerance at the seedling stage in rice. However, the difference in cold-r...
InDel Marker Based Estimation of Multi-Gene Allele Contribution and Genetic Variations for Grain Size and Weight in Rice (Oryza sativa L.)
Insertion/Deletion (InDel) markers genetic variation multi-gene allele contributions rice (Oryza sativa L.), grain size and weight rice germplasm
2023/8/9
The market success of any rice cultivar is exceedingly dependent on its grain appearance, as well as its grain yield, which define its demand by consumers as well as growers. The present study was und...
Root iron plaque alleviates cadmium toxicity to rice ( Oryza sativa ) seedlings
水稻根系 镉吸收 IP 环境胁迫 Cd+Fe
2023/4/21
Iron plaque (IP) on root surface can enhance the tolerance of plants to environmental stresses. However, it remains unclear the impact of Fe2+ on cadmium (Cd) toxicity to rice (Oryza sativa) seedlings...
The effect of different antibiotics on the elimination of Agrobacterium and high frequency Agrobacterium-mediated transformation of indica rice (Oryza sativa L.)
Agrobacterium-mediated transformation Agrobacterium elimination gus reporter gene hygromycin phosphotransferase selectable marker gene (hpt) rice
2014/2/25
We report here the suitable explant with high efficiency of transformation and the positive effects of timentin over other antibiotics like carbenicillin and cefotaxime on the elimination of Agrobacte...
Crossability of selected progeny from interspecific crosses between Oryza sativa and Oryza glaberrima (NERICAs)
Crossability interspecific crosses NERICA hybrid sterility
2011/2/22
Some selected first and second generation upland NERICAs (New Rice for Africa, genetic interspecific materials derived from successful crossing of the two cultivated rice species Oryza sativa and Oryz...
Allelopathic effect of aquatic hull extract of rice (Oryza sativa L.) on growth of Silybum marianum and Echinochloa crus-galli
Allelopathy Echinochloa crus-galli Oryza sativa L Silybum marianum
2011/1/12
In this research, the allelopathy effect of rice hull extracts (Oryza sativa L.) on Silybum marianum and Echinochloa crus-galli was investigated. The water extracts were gotten from 13 cultivated rice...
Physiological responses of two Turkish rice (Oryza sativa L.) varieties to salinity
Chlorophyll K/Na ratio proline rice salinity
2010/10/29
Effects of salinity (60 mM NaCl) on 2 Turkish rice varieties (Kıral and Yavuz) were studied in comparison to 2 international check varieties (IR4630-22-2 tolerant and IR31785-58-1-2-3-3 susceptib...
Radio sensitivity studies of morpho-physiological characteristics in some Iranian rice varieties (Oryza sativa L.) in M1 generation
Gamma ray rice mutation morpho-physiological characteristics
2011/1/12
Gamma (γ) ionizing ray is a physical mutagen, producing variation in crop improvement and employing such as a complementary tool in breeding process. The γ-ray dosages are a critical issue, so it shou...
Estimation of the heritability of agro-morphological traits in rice (Oryza sativa L.) using F2:3 families
Rice (Oryza sativa L.) F2:3 families heritability environmental variance
2011/1/11
Heritability is an important genetic parameter of the trait under selection. 193 F2:3 families of a cross between 'MousaTarom' and '304' were evaluated under field conditions. The studied traits were ...
GENETIC DIVERGENCE ANALYSIS FOR CERTAIN YIELD AND QUALITY TRAITS IN RICE (Oryza sativa L.) GROWN IN IRRIGATED SALINE LOW LAND OF ANNAMALAINAGAR, SOUTH INDIA
Cluster analysis morphological character grain quality
2010/12/8
Genetic diversity among twenty six genotypes of rice genotypes from four states of South Eastern Region of India was evaluated using Mahalanobis D2 statistic. The experimental materials were evaluated...
High-yielding Crop Management by Enhancing Growth in Reproductive Stage of Direct-Seeded Rainfed Lowland Rice (Oryza sativa L.) in Northeast Thailand
Biomass production Growth duration Nitrogen uptake Reproductive stage
2010/3/4
The crop management in direct-seeded rice to promote growth during the reproductive stage was evaluated in weed-controlled toposequentially intermediate fields in a small watershed in Northeast Thaila...
Effects of Top Dressing on Growth and Panicle Dry Weight as Affected by Soil Water Stress at the Early Panicle-Development Stage in Rice (Oryza sativa L.)
Leaf area duration Net assimilation rate Rice SPAD Total dry weight
2010/3/4
Rice yield is reduced by a short period of water stress at the early panicle-development stage. This study was conducted to examine the factors that reduce the panicle dry weight of rice subjected to ...