搜索结果: 1-15 共查到“作物学 Variation”相关记录82条 . 查询时间(0.078 秒)
南京农业大学农学院《Plant Cell》发表宋庆鑫教授团队“Asymmetric variation of DNA methylation during domestication and de-domestication of rice”（图）
宋庆鑫 水稻栽培 基因
2023/10/28
水稻是全球最为重要的粮食作物之一，在其漫长的驯化过程中形成了形态各异的水稻栽培亚型，包括粳稻、籼稻、Aro和Aus等。在水稻栽培种植历史过程中，有些水稻逐渐恢复部分野生稻表型特征，最终演化成严重威胁全球水稻产量的杂草稻，这种现象称之为“去驯化”。通过基因组进化研究发现，大量驯化位点的变异在去驯化过程中并不能得到恢复，这就暗示着可能存在别的遗传机制来调控杂草稻在去驯化过程中恢复野生稻表型。DNA甲基...
Genetic variation in MYB5_A12 is associated with fibre initiation and elongation in tetraploid cotton
MYB5_A12 陆地棉 纤维起始 纤维伸长 表达水平 海岛棉
2024/5/17
本研究发现MYB5_A12在陆地棉（SG747）纤维起始及伸长早期的表达水平显著低于海岛棉（GZ75）；通过QTL共定位分析发现，海岛棉GbMYB5_A12的等位基因型与纤维长度（FL）、纤维强度（FS）和衣分（LP）等性状显著正相关，其启动子区的顺式作用元件TFmatrixID_0063 (GATGTTGT)的自然变异可能导致海陆等位基因差异表达；通过酵母单杂及双荧光素酶报告基因实验验证了RAV...
南京农业大学农学院 《Molecular Plant》发表小麦遗传育种创新团队“A natural variation of an SVP MADS-box transcription factor in Triticum petropavlovskyi leads to its ectopic expression and contributes to elongated glume”（图）
小麦遗传育种 新疆稻穗麦
2022/3/23
2021年5月26日，南京农业大学作物遗传与种质创新国家重点实验室小麦遗传育种创新团队在分子植物杂志（Molecular Plant）发表了“A natural variation of an SVP MADS-box transcription factor in Triticum petropavlovskyi leads to its ectopic expression and contr...
Natural variation of OsGluA2 is involved in grain protein content regulation in rice
Natural variation OsGluA2 grain protein rice
2023/8/9
Grain protein content (GPC) affects rice nutrition quality. Here, we identify two stable quantitative trait loci (QTLs), qGPC-1 and qGPC-10, controlling GPC in a mapping population derived from indica...
Spatial variation of carbon dioxide fluxes in corn and soybean fields
Spatial Variation Transects Soil Organic Matter
2013/3/4
Spatial variation of soil carbon dioxide (CO2) flux during a growing season within corn and soybean canopies has not been quantified. These cropping systems are the most intense in the United States a...
Variation in the spatio-temporal expression of Insecticidal Genes in Cotton
efficacy spatio-temporal expression transgenic Bt cotton
2014/2/25
The most significant breakthrough in plant biotechnology is the development of the techniques to transform genes from unrelated sources into commercially important crop plants to develop resistance ag...
Variation of Morphological and Agronomic Traits in Hybrids of Trifolium pratense × T. medium and a Comparison with the Parental Specie
interspecific hybrids morphological traits persistence ed clover rhizomes zigzag clover
2014/2/25
Trifolium pratense L. is a high-yielding and high-quality fodder crop. However, it shows low persistence,
which may be overcome by hybridisation with species that produce rhizomes. Hybrids between T...
Pattern of variation for seed characteristics in Turkish populations of Cucurbita moschata Duch.
Pumpkin population seed dimension variation multivariate analysis
2011/1/11
Pumpkins are one of the most important Cucurbit crops in Turkey. For this research, 40 populations of pumpkin, Cucurbita moschata Duch., were collected from different regions of Turkey and variation i...
Seed protein electrophoresis for assessment of genetic variation within genotypes of meadow fescue (Festuca pratensis Huds)
acid-PAGE genetic diversity meadow fescue SDS-PAGE
2014/3/10
The protein diversity of 45 genotypes (forty genotypes selected within two gene pools and five varieties) of meadow fescue was examined. Genetic variation was described using ISTA/UPOV methods for cro...
Determining the levels of genetic variation using SSR markers in three Turkish barley materials known as Tokak
Barley genetic variation landrace microsatellite markers
2010/2/24
Genetic variations are the raw materials of plant breeding and have been increasingly narrowed due to various reasons. Landraces are good sources of genetic variation, but need to be characterized fir...
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...
Genetic variation of leaf antioxidants and chlorophyll content in safflower
Safflower Carthamus tinctoriuos antioxidant carotenoids chlorophyll
2010/9/14
An efficient antioxidant defense system represented by enzymatic and non-enzymatic forms is important in the control of oxidative stress caused by free radicals and other reactive species. Leaf antiox...
Genotypic Variation in Responses of Cassava (Manihot esculenta Crantz) to Drought and Rewatering: Root System Development
Cassava Drought Drought recovery Lateral roots Plasticity Principal component analysis
2010/3/4
Soil moisture condition is a major factor that affects root system development and thus, crop production. This study aimed to evaluate genotypic variations of cassava in root system structures and the...
Effects of Light Quality, Daylength and Periodic Temperature Variation on the Growth of Lettuce and Radish Plants
Daylength Lettuce Light quality Radish R/B ratio R/F ratio Thermoperiodicity
2009/8/6
Effects of light qualities under continuous lighting, daylengths at a constant temperature, and periodic temperature variations under continuous lighting on the vegetative growth of lettuce and radish...
Single Leaf Photosynthesis of Rice Plants under Field Conditions:IV. Variation in single-leaf photosynthesis among several successive days, and the interactive effects of irradiance and stomatal conductance on CER
Evaporation rate Light intensity at the leaf surface Light saturation point Rice plants Single-leaf photosynthesis
2009/8/6
(1) Variations in single-leaf photosynthesis (CER) among days: CER under saturation light intensity at nearly the same time of several successive days were examined, at three growth stages. (i) CER va...