聚乙二醇月桂酸酯的制备及其在化纤油剂中的应用

研究了聚乙二醇月桂酸酯的制备,对聚乙二醇８００,１０００以对甲苯磺酸作为催化剂,４－甲基－２,６－二叔丁基苯酚为抗氧剂,与月桂酸反应的条件进行了探讨,并分析了其有关性质及在化纤油剂中的应用     

优质黑粒小麦76的选育及品质分析

应用小麦属间远缘杂交和染色体工程与组织培养等生物技术,首次育成了黑粒小麦76新品种,填补了自然界黑色谷物家族中无小麦的空白。文中报道了黑粒小麦76的选育经过,育种程序,特征特性和营养成分的分析比较。又人工合成黑粒小麦的可行性,超优小麦的选育等也进行了探讨。     

大豆新品种豫豆22号的选育及丰产稳产性分析

针对目前黄淮海夏大豆品种存在的突出缺点,采用有效的复合杂交方法,将两种性状差异悬泊优良亲本综合起来,经系谱法定向选择,抗逆性鉴定,决选出售要高产,稳产,高蛋白于一体的夏大豆新品种豫豆２２号。经两年１３点次河南省大豆品种区域试验,平均单产２７４６．５ｋｇ／ｈｍ＾２,较ｃｋ显著增产;丰产稳产性分析,该品种属高产稳产类型。     

粤东发展相思木片基地的若干问题

基于相思类树种的生物学特性,及粤东地区具体的自然资源条件,在总结该类树各前期引种结果及现有良种储备的基础上,综合提出粤东发展相思丰产林的整体策略与具体措施,指出广东木片基地东移的效益及其潜在风险,为粤东发展相思人工林的科学管理与决策提供思参。     

Comparative genetic mapping of loci affecting plant height and development in cereals

Restriction fragment length polymorphism (RFLP) mapping data for genes determining dwarfness (GA insensitive and GA sensitive), vernalisation response and photoperiodic response in wheat, rye and barley were compared and their homoeologous relationships discussed. The GA insensitive Rht genes of wheat are not related to the GA insensitive dwarfing genes of rye or barley; however, homoeology is present for two members of the GA sensitive dwarfing genes of wheat (Rht12) and rye (Ddw1), located on the translocated segments of the long arms of chromosomes 5A and 5R, respectively. The comparative mapping of the Triticeae group 5 vernalisation response genes of wheat, rye and barley, and the group 2 photoperiodic response genes of wheat and barley, show that both gene families are located in homoeologous regions of the particular chromosomes. This revised version was published online in August 2006 with corrections to the Cover Date.     

高产稳产抗病冬小麦新品种豫麦39号的选育

利用早熟大穗品种偃师４号与抗病,灌浆快的大粒品种陕农７８５９杂交,通过协调穗粒数与千粒重的矛盾,保持适中的成穗数,确定合理的株型模式,选育成高产,稳产,抗病,落黄好,灌浆快且具有广泛适应性的多穗大粒型冬小麦新品种豫麦３９号。     

Key Links and Solutions for the Relationshipsabout Reconstruction of Old Buildings

Following the rapid development of the revolutions in housing system,reconstruction of old buildings is rising.In order to make the reconstruction proceed smoothly,in this paper the author studies the secondary parts,reinforcing foundation,dismantlement of some parts of an old building,linkage of new and old frames,solutions for the four relationships,and others.     

陇东黄土高原沟壑区水保林有效覆盖率及其确定方法

通过对陇东黄土高原沟壑区水土保持林系统的分析,结合有关水保林科研成果,认为水保林有效覆盖率是指在一定防护范围内土壤流失量等于允许流失量时的林木覆盖率;应用王秋生等人的研究模型计算出陇东黄土高原沟壑区水保林有效覆盖率为43.6%.     

矮败小麦及其在矮化育种中的应用

矮败小麦是具有矮秆基因标记的显性核不育材料。它接受非矮秆品种的花粉,后代分离的矮秆株为雄性不育,非矮秆株为雄性可育。矮败小麦在轮回选择和矮化育种中有重要价值。     

论缓解我国钾源短缺问题的新对策

本文针对我国钾源短缺的国情,分析了夺取作物高产的传统对策。根据国内外植物营养遗传生理学的研究进展,提出了充分利用我国丰富的种质资源,运用现代遗传育种技术,选育和推广耐低钾优良品种是缓解我国钾源短缺问题的最好途径之一。并根据钾素生理功能的特点,提出了用钙钠等部分替代钾的可能性。