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形态特征:一年生直立草本,高1-3米,,枝具纵沟槽,密生灰白色贴伏毛。叶掌状全裂,裂片披针形或线状披针形,先端渐尖,基部狭楔形。表面深绿,微被糙毛,背面幼时密被灰白色贴状毛后变无毛,边缘具向内弯的粗锯齿。雌雄异株,雄花序长达25厘米,花黄绿色,雄蕊5枚,雌花绿色,子房近球形;瘦果为宿存黄褐色苞片所包,果皮坚脆,表面具细网纹。花期5-6月,果期为7月。有二亚种,即普遍栽培的火麻和生产“大麻烟”违禁品...
形态特征:一年生草本,须根系,不定根发达,秆直立,丛生,高可达80厘米以上。叶鞘松弛,无毛,叶舌披针形,叶片线状披针形,无毛,粗糙。圆锥花序大型疏展,长约30厘米,分枝多,棱粗糙,成熟期向下弯垂,稻穗约开200-300朵稻花,一朵稻花会形成一粒稻谷。颖果长约5毫米,宽约2毫米,厚约1-1.5毫米,厚纸质,表面网格乳状突起,有芒或无芒。古老粮食植物,花果期因品种而异。
Grain shape is a key trait in rice breeding. Although many QTLs and genes of grain shape have been identified, how different combinations of alleles of these genes affect grain shape is largely unknow...
氮素是植物生长发育所需的大量元素之一,水稻是我国的主要粮食作物,水稻生产对氮的需求仅次于水,是构成水稻生长成本的主要部分。目前,水稻氮肥表观利用率只有39%,即施氮肥量的50%以上残留在环境中。因此,在保证产量不减的基础上如何提高氮肥的利用效率,减少氮肥的使用量是我国农业可持续发展亟待解决的重要问题。
Background: Direct seeding is an efficient cultivation technique in rice. However, poor low temperature germinability (LTG) of modern rice cultivars limits its application. Identifying the genes assoc...
Leaf rolling and discoloration are two chilling-injury symptoms that are widely used as indicators for the evaluation of cold tolerance at the seedling stage in rice. However, the difference in cold-r...
The market success of any rice cultivar is exceedingly dependent on its grain appearance, as well as its grain yield, which define its demand by consumers as well as growers. The present study was und...
Iron plaque (IP) on root surface can enhance the tolerance of plants to environmental stresses. However, it remains unclear the impact of Fe2+ on cadmium (Cd) toxicity to rice (Oryza sativa) seedlings...
The purpose of this study was to comparatively assess the antidermatophyte and antioxidant activities of enilconazole, Nigella sativa (NS) and enilconazole with NS in the treatment of dermatophytosis ...
[目的] 了解高寒地区燕麦人工草地生物量分配格局对燕麦品种、施肥措施和混播水平的响应机制,为高寒地区人工草地建植提供依据。[方法] 采用"三因素四水平"正交试验设计,包括4个燕麦品种,分别为青燕1号、林纳、青海444、青海甜燕麦;4种施肥措施,分别为不施任何肥料(CK0)、尿素75 kg/hm2+磷酸二铵150 kg/hm2(NP)、有机肥1500 kg/hm2(OM)和尿素37.5 kg/hm2...
Purple rice is a strain of glutaneous rice rich in anthocyanins and γ-oryzanol. Both types of compounds are involved in antioxidant and lipid metabolism of mammals. Three experimental diet types were ...
This experiment was conducted in order to compare the effects of Nigella sativa (NS) and silver sulfadiazine (SSD) cream on healing of burn wounds in rats. Fifty four adult, male Wistar-albino rats we...
Field trials were conducted in the Agricultural Research Institute for Rice, at two localities during 2005 and 2006. The objective of the study was to establish an appropriate weed management strategy...
Sweet chestnut Castanea sativa Mill. is an introduced species in the Czech Republic. It is recorded roughly from 300 localities. To the end of 2002, the occurrence of chestnut was verified at about 14...
We studied occurrence of chestnut blight disease in the Experimental Castanetarium Horn?Lefantovce, SW Slovakia. The study ran in years 2006?007 on a set consisting of 889 chestnut trees growing in th...

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