Deng Zhongchi , Chen Chuilian , Chen Fengyuan ,
1987(3).
Abstract:在武汉地区七、八月的气候条件下,水稻剑叶的a/b呈现出7:00-9:30的高比值,午后15-17点比值降到最低,傍晚又略有回升。叶绿素a/b比值的日变化与叶绿素b呈显著或极显著的负相关,而与叶绿素a则看不出相关性。短时间的恒温(30℃)与恒温加全光照或全黑暗,能改变这种变化的幅度和出现高低比值的时间,但仍表现出相似于自然光温条件下的变化节奏,说这明叶绿素a/b比值的日变化可能是植物长期适应外界环境条件所形成的一种内部节律,不易为短时间的温光等条件的改变而消失。
Zhang Xiufu , Sun Jizhong , Liu Jinlan
1987(3).
Abstract:以陆地棉作母本,分别与草棉、瑟伯氏棉杂交,陆地棉自交作对照,采用扫描电镜、荧光显微技术观察花粉萌发与花粉管的生长。结果是:自交对照的花粉在授粉后30分钟开始萌发,而两个异种的花粉与陆地棉柱头接触后1小时才开始萌发。异种花粉管在陆地棉花柱中生长时,出现膨大、分叉、扭曲折叠和花粉管尖而细长等异常现象。这些异常现象出现的时间是,陆地棉×草棉是在授粉后12-21小时,而陆地×瑟伯氏棉则是在授粉后6-12小时。进入子房的异种花粉管大多数先后停滞下来,不能进入胚珠,异常生长的主要表现是尖端膨大。
1987(3).
Abstract:Five inbred lines of rapeseed were intercrossed to obtain a dialliel setincluding reciprecals. The contents of oil and total glucosinolates were investigatedthrough diallel analyses according to the method presented by Hayman (1954) anddescribed by Mather
Li Youfang , Yu Yujun ,
1987(3).
Abstract:The relationship between permeability of wheat root cells and rough toxinof scab was studied. It was found that the toxic effect of scab fungus increased thepermeability of root cells of wheat. The degree of the effect on host was associated withthe resis
1987(3).
Abstract:本文依据数理统计学原理,对数量遗传学中非分离世代方差的算术平均数作为环境方差估值的公式作了修正,提出根据P_1.P_2、F_1代的自由度加权计算合并方差作为环境方差的估值,其有效性要高于前者,仅当样本容量相同时,两者数值相等且有效性相同。文中还列举了一些实例具体说明环境方差估计方法不同对对遗传力大小的影响。
Zong Liangbing , Zhong Changzhen , Lei Chaoliang ,
1987(3).
Abstract:1982~1985年在湖北省25个县(区),调查了49种植物,采集了130种昆虫卵,经饲养获得赤眼蜂24747头,已定出种名的有9种,其中5种为湖北省首次记录。根据9种赤眼蜂在湖北省不同农业区内的种类组成、分布频率及其所在地区的地理特点、气候条件、植被特征以及人类生产活动的影响等因素的综合分析,初步把湖北省赤眼蜂地理分布分为鄂南区I和鄂中北区Ⅱ。其中鄂南区Ⅰ分为鄂西南林特区Ⅰ_A和鄂东南稻麻区I_B二小区,鄂中北区Ⅱ分为鄂西北林特区Ⅱ_A、鄂中东北粮棉区Ⅱ_B、鄂西粮特区Ⅱ_C、江汉平原粮棉区Ⅱ_D、鄂东沿江平原粮棉区Ⅱ_E五小区。
1987(3).
Abstract:Some natural materials used as nutritional sources for the mycelial growthof Auricularia auricula were studied in the present paper. A suitable liquid mediumformulation for the submerged culture was proposed, according to the results of certainpreliminary
1987(3).
Abstract:It is clear from this paper results that: (1)The spatial structure of soilEC and C1~- during leaching at depths 1(0-30 cm), 2 (30-60 cm), 3 (60-90 cm),and 4 (90-120 cm) is affected more by salt concentration of the leaching water then bythe original prope
Liu Tongchou , Deng Boer , Yang Zhuqing , Gao Liang ,
1987(3).
Abstract:A research was conducted to establish the standard of the amount ofhexavlaent chromium in calcium magnesium phosphate made of chromic residue as it wasapplicated to acid soil. Rice, wheat and Chinese cabbage were used as indicator plants.The results of so
1987(3).
Abstract:The optimum group size of progeny of sire (or poultry) was disscussedwhen the total cost of testing was limited or the genetic gain was fixed. Using theformulae in paper, the optimum group size of progeny which can get in the highestgenetic gain or the lo
1987(3).
Abstract:The formulae of optimal group size of the maxial genetic gain in unit costare given. When the power of progeny testing is fixed. And the progeny testing in threecases are discussed.
Zhang Haiming , Lei Sijia , Zhang Juli ,
1987(3).
Abstract:对高关水库96尾鲢鱼[Hypophthalmichthys molitrix]和160尾鳙鱼[Aristichthysnobilis]作常规的生物学测定和统计运算后得出,鲢、鳙鱼体长与鳞长呈直线相关、体长与体重星幂函致相关。鲢、鳙鱼的生长规律符合Von.Bertalarffy生长方程。计算得鲢、鳙鱼的生长参数为:L_∞=80.884厘米、107.927厘米,W_∞=7332.75克、16334.598克,K=0.322、0.219,t_0=O.214年、0.308年,生长拐点年龄为3.627年、5.326年,拐点体重为2173.89克、4842.28克。高关水库以鲢鱼的拐点体重(2173.89克)作为捕捞规格、年捕捞强度为0.80、放养鱼种的规格在5寸以上,则鱼产量可望达到30万公斤。
1987(3).
Abstract:Some characteristics of the accumulation and the distribution of dry matterduring the formation of grain yield per shoot were investigated usingll cultivars ofwinter wheat. The formation of grain yield per shoot can be divided into three stages:(1)the ear
Tel: 027-87287364
Postcode: 430070
E-mail:hnlkxb@mail.hzau.edu.cn
Address: No.1 Shizishan Street,Hongshan District,Wuhan, Hubei,China
Jorunal of Huazhong Agricultural University ® 2024 All Rights Reserved Supported by:Beijing E-Tiller Technology Development Co., Ltd.