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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...
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...
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...
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...