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The genomic basis of geographic differentiation and fiber improvement in cultivated cotton
栽培陆地棉 纤维品质 优异位点 分子育种
2024/4/16
栽培陆地棉广泛种植于世界各地，是最重要的天然纤维来源，纤维品质直接决定了其经济价值。国内外棉花育种家开展了广泛的远缘杂交工作，将许多稀有的重要基因转移到栽培陆地棉中提高纤维品质，但并未对这些基因进行深入研究。本研究分析了超过3000份棉花种质资源，总计调查了近80000个纤维品质数据，全面剖析和评估了现存陆地棉种质资源中纤维品质相关的优异位点，并从远缘杂交渐渗系中鉴定到两个新的与纤维品质密切关联的...
A Cyto-histological Study on Shoot Differentiation and Mesophyll Morphology of the Excised Lettuce (Lactuca sativa L.) Cotyledons as Affected by Light Conditions during Seedling Growth
Cell Cotyledon Lettuce Light Mesophyll Shoot differentiation
2009/8/6
Light quality and quantity of the environment, where lettuce seedlings were grown, affected the mesophyll tissue and the shoot formation in cotyledons excised and cultured in vitro. When cultured on M...
The Effect of Plant Nitrogen Condition during Reproductive Stage on the Differentiation of Spikelets and Rachis-Branches in Rice
Nitrogen Rachis-branch Rice Spikelet differentiation Spikelet number
2009/7/30
An increase in rice yield in warmer areas in Japan is limited by the low number of spikelets per unit area, for which a lower efficiency in spikelet production per unit plant nitrogen (N) has been con...
Ultrastructural Changes Leading to Plantlet Differentiation in Callus Cultures of African Rice
Amyloplast Callus Differentiation 0ryza glaberrima Plant regeneration Ultrastructure
2009/7/28
Semithin and ultrathin sections of callus tissues of African rice (Oryza glaberrima Steud) after 7 and 14 days of initiation were compared with similar cultures after 3, 5, 7 and 10 days of incubation...
Varietal Differences of Rice in Differentiation and Degeneration of Secondary Rachis-branches and Spikelets in Terms of Their Nodal Distribution on a Rachis
Degenerated spikelet Differentiated spikelet Ear type Primary tiller Rice Secondary rachis-branch Spikelet number
2009/7/23
The higher number of spikelets in modern rice varieties with higher yielding ability (MVs) results from the higher number of secondary rachis branches (SBs). It is conjectured that rice cultivar Takan...
Varietal Differences of the Course and Differentiation Time of Large Vascular Bundles in the Rachis of Rice
Large vascular bundle Primary rachis branch Rachis Rice Varietal difference
2009/7/22
The course and differentiation time of large vascular bundles in the rachis of japonica (cv. Musashi-kogane) and indica (cv. IR36) rice were compared. Large vascular bundles in the rachis consisted of...
Significance of Flower Differentiation and Development in the Process of Determining Soybean Yield:Effects of shading treatment on the number of floral buds and pod sets
Dry matter production Number of floral buds Pod set Raceme order Seed yield Shading treatment
2009/7/21
Shading treatment(shading rate 89%)was conducted on a soybean canopy(cv.Tatisuzunari)at successive 7-day intervals during 4 weeks before and after flowering, and the number of floral buds and pod sets...
Differentiation and Development of the Branching of Panicle with Reference to the Number of Spikelets in Rice
Branch Indica cultivar Japonica cultivar Oryza sativa L. Panicle Rice Spikelet
2009/7/16
The developmental process of young panicles was observed to estimate the diameters of young panicle primordium and the diameters of primary branch primordium. The effects of these diameters on the bra...
Differences in Flower-bud Differentiation of Malformed Fruit in Two Tomato Cultivars
Katsumi Ohta Kenji Toyota Takashi Hosoki
2009/7/13
Differences in fruit malformation were studied in two tomato cultivars (Lycopersicon esculentum Mill.). The degree of fruit malformation of ‘Ogatafukuju’ was greater than that of ‘Kyokko’, when seedli...
Heading Characteristics of the Extremely Early Rice Cultivar ‘Tosapika’ in Warm South-western District in Japan—Effects of daylength and temperature on the differentiation and development of the young panicle
Temperature Stock-raising (kabumaki) pot Extremely early rice Heading characteristics
2009/7/9
In 1998, premature heading was observed in the early season culture field of the extremely early rice cultivar ‘Tosapika’ in Kochi Prefecture. To clarify the factors associated with that, the effect o...
Influence of Early Sowing on Pattern of Floret Differentiation on Developing Spikes of Wheat Cultivars in Yamaguchi
Winter habit Spikelet number per spike Wheat Floret differentiation Terminal spikelet stage
2009/7/7
Pattern of floret differentiation at each spikelet position of developing spikes of nine wheat cultivars was investigated in three successive growing seasons, from 1999 to 2002 in Yamaguchi. The resu...
Anther Culture Potential of Linseed（Linum usitatissimumL）：Effects of Genotypes and Pretreatment on Callus Formation and Differentiation
Culture Potential of Linseed Genotypes and Pretreatment Callus Formation Differentiation
2009/1/23
This study is concerned with the production of haploids of linseed. Anthers of eight genotypes were cultured both on solid and in liquid medium. It was found that callus induction rate was low in both...
SSR Marker Analysis on indica-japonica Differentiation of Natural Population of Oryza rufipogon in Yuanjiang, Yunnan Province
Oryza rufipogon indica-japonica differentiation simple sequence repeat
2009/1/7
By using 19 pairs of primers that could identify two subspecies (indica and japonica) of cultivated rice (Oryza sativa L.), the indica-japonica differentiation of 56 individuals from the natural popul...
REGIONAL DIFFERENTIATION OF PALM DERMATOGLYPHS IN RURAL POPULATION IN POLAND
dermatoglyphs palm rural population regional differentiation
2010/12/23
The study presents a comparison of the distribution of palm dermatoglyphs in the rural populations of different regions of Poland, namely, the Lublin region, the areas of Suwalki, Ostroleka, and of th...
GENETIC DIFFERENTIATION OF COTTON CULTIVARS BY POLYACRYLAMIDE GEL ELECTROPHORESIS
Cluster analysis cotton genetic diversity Gossypium hirsutum & polyacrylamide gel electrophoresis
2010/11/30
Information about genetic diversity and relationships among the breeding materials has a significant impact on crop improvement. Association between parental divergence and progeny performance has not...