Tang Wei ) \ Deng Zhongchi ) \ Jiao Demao ) \ Xu Jiuwei )
1998, 17(6).
Abstract:Using paddy rice as materials, the daily changes of photosynthetic rate under different natural conditions and different photoperiod treatments are examinated. Results show that the daily change of photosynthetic rate in shining day is double peak curve,
Zhan Ming ) Li Wanjiu ) Zhang Xiuru ) Wang Zhenlin ) Yang Guozheng ) Chen Xiuqiong )
1998, 17(6).
Abstract:1997年的小区试验及大田示范结果表明:简化栽培棉单位面积总在铃数,铃重等与常规栽培棉差异不显著,衣分显著低于对照。简化栽培棉皮棉产量为1463.3kg/hm^2,比常规栽培棉增产5.4%,差异不显著;间作早玉米的简化栽培棉为1456.7kg/hm^2,比对照增产4.9%,差异不显著,但多收一季玉米。在单株叶数1-4个范围内,简化栽培棉单株叶枝数与单株成铃数呈显著或极显著正相关关系,但以带有1-2
Luo Bingshan Qu Yinglan Zhang Xianlong Xu Shuqing Huazhong Agricultural University , Wuhan )
1998, 17(6).
Abstract:采用小麦小穗离体培养法,研究了在含蔗糖和琼脂的MS培养在基中添加BR120或BR对颖果形成的影响。在开花前4d小穗培养中添加0.010,0.100mg/L BR120或0.01mg/L BR可使小穗颖果数由对照的1.4粒增加至2.1-2.5粒,而颖果重比对照提高31%-84%;在开花后2d小穗培养中,则可使颖果数由对照的1.9粒增至2.5-3.0粒,其颖果重提高34%-50%,表明BR120和BR
Hou Mingsheng ) Zhao Mingfu ) Qin Rui ) Zhang Zongyi ) Xu Zeyong )
1998, 17(6).
Abstract:通过对湖北省五峰,恩施,建始3个县的139个病毒病标样生物学和血清学鉴定,证明湖北省白肋烟病毒病毒源种类主要是CMV,PVY和TMV3种病毒,存在单独侵染和复合侵染5种侵染类型,其中CMV侵染频率为33.815,PVY为22.30%,TMV为14.395,CMV+PVY,TMV+PVY复合侵染频率分别为5.76%和5.03%。
1998, 17(6).
Abstract:采用水浸法,碱浸法从香菇菌盖中提取粗多糖,经乙醇沉淀,Sevag法脱蛋白,CTAB络合沉淀,氯化钠溶液溶解,透析,得到2种多糖:Lew(水浸物)和Lea(碱浸物)。经PAGE电泳,纸层析,紫外光谱分析鉴定,两都为均一组分。Lew的纯度为79.1%,Lea为83.2%。改良型膜渗秀压法测分子量,Lew分子量为8.31×10^4,Lea为9.40×10^4。经红外光谱分析,Lew,Lea具有相似结构
Yao Qihua ) Liu Wuding ) Chen Mingliang ) Yang Li ) Zhao Shujun ) Xie Zhenchi )
1998, 17(6).
Abstract:By comparing the measured and model-calculated P absorbed by seedlings, the verification error sources and improvement of several mechanistic models of nutrient uptake in the process of P absorption by maize and soybean under different soil conditions wer
1998, 17(6).
Abstract:It was found that both nutritional (Pharmamedia) and non-nutritional particles (coal and carmin) could dramatically raise the resistance of mosquitoes ( Aedes aegypti ) to Bacillus thuringiensis subsp. israelensis , with which the nutritional pro
Jian Yunhua\ Long Liangqi\ Deng Changyan\ Xiong Yuanzhu
1998, 17(6).
Abstract:以人源小卫星探针33.15和33.6分析了瘦肉型猪抗应激品系DNA旨纹。结果表明在2.0-23.0kb区间内图带数分别为13.42±2.75和11.00±1.61,相似系数为0.558±0.097和0.653±0.096,33.15探地检测其特征带为2.1kb和10.0kb。
Zhao haobin\ ) Chen Naiqing\ ) \ Wei Qingxin\ )
1998, 17(6).
Abstract:以湖北白猪为试验动物,研究了不同处理对猪2-细胞胚胎电融合的影响,结果表明;融合液的离子强度,电场强度,脉冲时程和交流电处理等均影响电融合的效率,以非电解质的甘露醇溶液为融合液,融合前交流脉冲处理,直流电场强度为1500-2000V/cm和脉冲时程为40-60μs时可获得较高的融合效率。
Long Liangqi\ Tang Baogui\ Zhao Zhenshan\ Jian yunhan
1998, 17(6).
Abstract:RAPD PCR analysis on the nature population of M. anguillicaudutus and P. debryanus was made by four random primers selected from 100 randem primers. The results showed. That genetic purity calculated by primer S 29 ,S 96 ,S 97 ,S 9
1998, 17(6).
Abstract:Experiments were carried out by using pear as the material to measure and analyse the content of calmodulin (CaM) and nuclear acid (NA) in the process of flower differentiation. The results showed that CaM in the buds on spurs increased to form a peak in
1998, 17(6).
Abstract:Drying dynamics and distribution regulation of interior water impart of synthetic rice during drying processing were studied by finite differences method. The processing of water transfering can be simulated by computer, water content at any time in dif
1998, 17(6).
Abstract:Bacillus thuringiensis (Bt), corn starch and LLDPE were blended to produce different degradable films After they have been buried in soil for 120 days, the degradation rate of starch in the films which contain Bt 0.5% and starch 50% is 89.52%. It is foun
Liao Xianzhen\ Zhang Jinmu\ Mao Qipin
1998, 17(6).
Abstract:The relation of the content of pectin, cellulose and hemicellulose in pumpkin, peach and tomato with the concentration of relevant 3 kinds of enzymes used during enzymatic liquefacion was studied, which was based on the setting up of the mathematic models
1998, 17(6).
Abstract:The study on phytic acid used as preservative is reported in this paper. Phytic acid and coating ages show good synergistic effects. They strongly inhibit fruit respiration and weight loss. After 120 days' storage, the weight loss is 30% lower than contro
Feng Ming ) \ Wang Zhongzhu ) \ Wang Baojia )
1998, 17(6).
Abstract:By analysing temperature and effective accumulated temperature (EAT) of Hubei province, it is discovered that climate variation in Hubei Province is warmer in winter and cooler in summer since 1980's. The change of the EAT in rice growth perio
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