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本文介绍了首次在陕西七里川发现的野亚麻(Linum stelleroides Planch.)的形态特征及其分布情况.从其生境条件看,它具有抗旱、抗寒、耐瘠薄等特性,是良好的抗逆性种质资源,此次发现为我国野生亚麻的研究与利用提供了新的材料. 相似文献
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本文介绍了首次在陕西七里川发现的野亚麻Linum stelleroides Planch.)的形态特征及其分布情况。从其生境条件看,它具有抗旱、抗寒、耐瘠薄等特性,是良好的抗逆性种质资源,此次发现为我国野生亚麻的研究与利用提供了新的材料。 相似文献
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亚麻快速生物脱胶发酵条件研究 总被引:1,自引:0,他引:1
通过对亚麻快速脱胶菌株Ym68′不同的发酵温度、接种量、浴比和脱胶助剂的脱胶试验,研究了亚麻快速生物脱胶的发酵条件。结果表明,亚麻快速生物脱胶的适宜条件为:温度30℃~35℃、浴比1:10—1:15、接种量15%-20%、脱胶助剂0.5‰CO(NH2)2或复合肥。温度对亚麻快速生物脱胶的影响最大,其次是浴比,而脱胶助剂和接种量的影响较小。 相似文献
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1992~1995年的试验结果表明,10hSD(短日)对光钝感生理雌性系NG1成花表现无效应或负效应,而对光敏感品种圆叶青(对照)成花有明显的促进效应。NG1和NG2一年中能成花3或4次。第1期的成花量及性别比与温度密切有关,于高温期砍秆后发生的再生麻成花量及雄花量均多;第1期花后,若不砍秆,茎梢须经过一段营养生长后开下一期花,但只开雌花。不同砍秆期是调节NG型苎麻成花及性别比的有效方法。 相似文献
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栽培亚麻的遗传多样性研究 总被引:1,自引:0,他引:1
基于110份来源于世界各地的亚麻(Linum usitatissimum)资源(栽培品种和育种材料)和1个野生近缘种L.bienne,利用AFLP技术研究形态学上不同的亚麻,即纤维亚麻和油用亚麻的遗传多样性.聚类分析结果表明,L.bienne明显区别于其他样品,自展值高;纤维亚麻与油用亚麻和不明用途亚麻也能区别开来,但自展值偏低.主成份分析显示,纤维亚麻与油用亚麻区别明显,但L.bienne与油用亚麻之间难以区别,荷兰、法国的纤维亚麻与其他国家的纤维亚麻亦可明显区别,这说明亚麻基因库出现了类群结构.分子方差分析显示,纤维亚麻的变异度低于油用亚麻及不明用途亚麻,因此,油用亚麻和野生亚麻L.bienne是丰富纤维亚麻基因库的潜在种质资源. 相似文献
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亚麻种子及麻屑的综合利用 总被引:7,自引:1,他引:7
亚麻是我国西北及华北地区主要的油用经济作物,也是东北地区及云南、新疆的主要纤维用经济作物。亚麻种子的综合利用可带来很高的经济价值。综合利用亚麻种子、亚麻根、亚麻茎可生产多种工业化产品;如可降血脂的亚麻油胶丸、高发泡性食品用亚麻胶、高蛋白饲料、植物雌激素-木酚素、膳食纤维素、建筑复合材料等。进行亚麻种子高技术水平的研究,对亚麻种子进行综合利用将对人类健康起到更大的作用。 相似文献
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亚麻种子及麻屑的综合利用 总被引:1,自引:0,他引:1
亚麻是我国西北及华北地区主要的油用经济作物,也是东北地区及云南、新疆的主要纤维用经济作物.亚麻种子的综合利用可带来很高的经济价值.综合利用亚麻种子、亚麻根、亚麻茎可生产多种工业化产品;如可降血脂的亚麻油胶丸、高发泡性食品用亚麻胶、高蛋白饲料、植物雌激素-木酚素、膳食纤维素、建筑复合材料等.进行亚麻种子高技术水平的研究,对亚麻种子进行综合利用将对人类健康起到更大的作用. 相似文献
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P. Barre L. Moreau† F. Mi‡ L. Turner§ F. Gastal B. Julier M. Ghesquière 《Grass and Forage Science》2009,64(3):310-321
Leaf length is an important trait for forage grasses. Molecular marker development offers the opportunity to identify Quantitative Trait Loci (QTLs) and to begin to dissect the genetic regulation of complex traits. The objective of this study was to look for QTLs for leaf length and related traits (plant height, lamina and sheath lengths, leaf elongation rate and leaf elongation duration) in the progeny of a cross between two genotypes of Lolium perenne L. with contrasting leaf length. Measurements were performed in a plant nursery in autumn and spring, and in a heated greenhouse in winter. A high level of variability and heritability was observed for all traits. Lamina lengths at different dates were moderately but significantly correlated. For all traits, QTLs were found and explained between 0·08 and 0·44 of phenotypic variance. Although different leaf length QTLs were found at different dates, linkage groups two, four and seven were particularly important. 相似文献
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J. R. Crush H. S. Easton† J. E. Waller D. E. Hume† M. J. Faville† 《Grass and Forage Science》2007,62(3):265-273
Genotypic variation in patterns of root distribution, nitrate interception and response to moisture stress were assessed in both parents and 198 progeny of a perennial ryegrass (Lolium perenne L.) full‐sibling mapping population. This was carried out in metre‐deep tubes of sand culture in a glasshouse experiment. The proportion of root dry matter (DM) weight in the top 10 cm of sand ranged from 0·33 to 0·75 and values of log10(1 ? K), where K is the constant for an exponential model relating root DM weight and root depth, also showed wide variation among genotypes. The proportion of a pulse of 15N recovered in whole plants ranged from 0·124 to 0·431. There was a positive linear correlation between the proportion of 15N recovered and plant total DM weight, but no relationship between nitrate interception and patterns of distribution of DM weight of roots. Some genotypes responded to moisture stress by increasing root growth, and in others root growth was inhibited. It is concluded that this below‐ground variability in root variables may be an evolutionary adaptation by plant populations to survive heterogeneity in soil biotic and edaphic factors. 相似文献
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一种野生苦瓜的部分形态特征、营养成分和染色体核型 总被引:3,自引:0,他引:3
研究了一种野生苦瓜的形态特征、营养成分及染色体核型.结果表明:与栽培品种相比,这种野生苦瓜的叶片、瓜果、种子均为小型,田间表现抗病、抗虫性强;经测定,其果肉的蛋白质、粗脂肪含量接近或低于栽培品种,维生素C含量为1 187.6 mg/kg,高于栽培品种“早丰3号”(816.0 mg/kg).染色体数目为2n=2x=22,同于栽培品种.田间调查还发现,野生苦瓜能够与栽培苦瓜自然杂交结果,自然杂种的特征形态居于两亲本之间,耐寒性,抗病、抗虫性则与野生苦瓜亲本相同.这种野生苦瓜有望成为有利用价值的苦瓜亲本资源. 相似文献