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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
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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...
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
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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...
Variation of the Dark Respiration Rate of Tissues and Organs of Rice (Oryza sativa L.) with Differential Physiological Age and Causal Factors
Age Dark respiration Michaelis-Menten equation Nitrogen Carbohydrate Respiration
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2009/7/31
Variation of the specific rate of dark respiration (mgCO2 g dry wt. -1h-1 measured at 29°C, Rs) with the age of the tissues and organs of rice cv. Suweon 258 and Nona Bokra, grown in the favorable fie...
Contribution of Sink and Source Sizes to Yield Variation among Rice Cultivars
Dry matter production Nitrogen application Non-structural carbohydrate Sink Source and Yield
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2009/7/29
In order to identify the key factors that arrest yield improvement in rice, we observed fifteen divergent cultivars in a field at Kyoto, Japan in 1995 and 2001 under various nitrogen (N) regimes. The ...
Rice Cultivar Variation in the Growth Response to Inoculation of Free-Living Rhizobacteria
Cultivar variation Nitrogen fixation Oryza glaberrima Steud Oryza sativa L. Rhizobacteria Rice
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2009/7/29
Rice Cultivar Variation in the Growth Response to Inoculation of Free-Living Rhizobacteria.
Variation in Seed Shape and Husk Color in Japanese Native Cultivars of Common Buckwheat (Fagopyrum esculentum Moench)
Buckwheat Fagopyrum esculentum Genetic resources Husk color Seed shape Variation
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2009/7/24
The variation in seed shape and husk color was investigated in 56 Japanese native cultivars of common buckwheat. Analysis of variance revealed highly significant differences among the cultivars in see...
Variation of Germination Response to Temperature in Formosan Lily (Lilium formosanum Wall.) Collected from Different Latitudes and Elevations in Taiwan
Habitat Lilium formosanum Lily Precipitation Seed germination Temperature
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2009/7/24
Germination characteristics at different temperatures were examined in Formosan lily (Lilium formosanum Wall.) seeds collected at different latitudes (22° 46’-24° 47’ N) and elevations (50-3000 m) in ...
Evaluation of Transplanting Date and Nitrogen Fertilizer Rate Adapted by Farmers to Toposequential Variation of Environmental Resources in a Mini-Watershed (Nong) in Northeast Thailand
Farmer's management Rainfed rice Rice groth Soil fertility Subecosystem Water availability
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2009/7/23
Environmental resources for rainfed rice production show large variability even within a small area in Northeast Thailand, and it is said that farmer’s management is well adapted to the variability. T...
Variation of Plant Types in Japanese Native Cultivars of Common Buckwheat (Fagopyrum esculentum Moench)
Fagopyrum esculentum Japanese native cultivar Morphological character Plant type
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2009/7/10
The plant-type variation in 56 Japanese native cultivars of common buckwheat (Fagopyrum esculentum Moench) was investigated. Eleven quantitative characteristics, such as main stem length, the lengths ...
Variation in the Percentage of Different Seeding Establishment Types of Direct Seeded Rice in Submerged Soil among Japonica and Indica Cultivars
Rice Seminal root Direct seeding Seedling establishment Cultivar Adventitious root
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2009/7/9
Twenty Japonica and 13 Indica cultivars of rice were seeded on the soil surface in paddy field and at a 1 cm depth in the soil and the soil surface in a container, and the type of their seedling esta...
Method of Estimating the Variation of Developmental Stages on the Basis of the On-Site Data of Transplanting Date in Rice-Producing Areas
AMeDAS Cooling degree days Developmental stage Glumaceous flowers Paddy rice
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2009/7/7
The variation of developmental stages in rice-producing areas makes it difficult to estimate cool weather damage. We made a method to estimate the percentage of productive panicles and glumaceous flo...
Genetic Variation among Bougainvillea glabra Cultivars (Nyctaginaceae) Detected by Rapd Markers and Isozymes Patterns
Genetic variation Bougainvillea glabra cultivars RAPD markers isozymes patterns
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2010/11/12
This study was aimed at determining the genetic relationships among the most important
Bougainvillea cultivars grown at most of the gardens in Egypt using random amplified Polymorphic DNA (RAPD) tech...
Source and Inheritance of the Within Cultivar Residual Variation Detected in an indica Variety IR64
simple sequence repeat residual heterogeneity within cultivar variation
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2008/12/11
The phenotypically uniform indica variety IR64 was chosen for study of the source and inheritance of within cultivar residual variation using a set of SSR markers. Residual heterogeneity in IR64 was i...