丰富的遗传多样性是提高品种遗传改良进度、增进品种应对各种胁迫的物质基础,也是实施以标记辅助选择为特征的分子育种和多基因聚合育种的必要条件。河北省是我国重要的小麦产区,小麦年均产量和种植面积均居全国第三位。建国以来,河北省已经进行了六次左右的品种更新换代,审定的小麦品种不下200个,但品种单产增加的幅度越来越小,在此背景下对该省小麦品种遗传基础进行系统全面的研究就显得十分必要。因此,本课题组在从全国
棉花是重要的经济作物,它给人类提供了丰富的纺织原料。棉花种子中含有大量的脂肪和蛋白质成分,也是重要的油料作物之一。棉花遗传育种目标主要集中于提高棉花纤维的产量和品质
A low-cost and portable optical chemical sensor based ammonia sensing system that is capable of detecting dissolved ammonia up to 5 ppm is presented.In the syst
We have reported high-energy pulse generation from a Q-switched Er-doped fiber laser based on black phosphorus (BP) with a drop-casting method.Poly dimethyl dia
High sensitivity of a distributed optical-fiber vibration sensing (DOVS) system based on the phase-sensitivity optical time domain reflectometry (Φ-OTDR) techn
斑茅(Erianthus arundinaceus)是具有高利用价值的甘蔗近缘属植物之一,其具有分蘖力强、生长势旺、生物量高、宿根性好和耐涝、耐瘠、抗旱、抗病虫能力强等优异性状,备受甘蔗育
2006年夏天,大一的暑假即将来临,期待着期末考试,心已经回到了遥远的家.学院下发通知,将组织一些学生远赴内蒙古进行为期10天的支教活动.对于向来特异独行的我,这种活动丝毫
前不久,一篇名为《叔叔阿姨,我们不希望你们来支教》的文章在网上广为转载,“叔叔阿姨,我们不希望你们来支教,我们都担心,这块贫瘠的土地容纳不下你们公益的热心……真的,叔
A micro structure porous cored octagonal photonic crystal fiber (P-OPCF) has been proposed to sense aqueous analysts (alcohol series) over a wavelength range of
In the present paper,we study the transmission of the two-dimensional photonic crystal (PC) superellipse ring resonator.The fast growing applications of optomec