Abstract:In this study, two indica photoperiod sensitive genic male sterile (PSGMS) lines, Peiai 64s, 8902s and their F 1, F 2 populations were selected. The genetic basis for sterile instability and fertillty reversibility of PSGMS lines were studied under diff

Abstract:Using three different lighttolerating plants as materials, weak light tolerating green peeper plants, moderate light tolerating paddy rice plants and strong light tolerating maize plants, we examine the daily changes of photosynthetic rate in these plants

Abstract:大麦受白粉菌侵染后，抗病品种和感病品种中草酸氧化酶ＲＮＡ转录物诱导表达，并伴随着酶活性的增加和蛋白质的积累。抗病品种Ｓｕｌｔａｎ－５在接种后２４ｈ酶活性开始明显增加，而感病品种在接种后３６ｈ才开始增加。接种４８ｈ后所有品种酶活性增加达到了高峰，酶活性大约为对照的４倍。ＳＤＳ－ＰＡＧＥ酶活性染色及Ｗｅｓｔｅｒｎ杂交表明受白粉菌侵染后酶活性上升，蛋白质积累增多。草酸氧化酶有２条活性带，分子量分别为９５

Abstract:A random microplot experiment was carried out in a paddy field to evaluate the effects of 4 cultivation measures on Hirschmanniella oryzae . At the turning green stage, the 4 cultivation measures i.e. rotation with cabbage, rotation with tobacco, plant

Abstract:研究了湖北省棕红壤、黄棕壤、水稻土和灰潮土的粘土矿物组成、电荷性质及对磷的吸附。结果表明：①供试土壤的粘土矿物组成都以水云母为主，高岭石和１．４ｎｍ矿物含量较少，１．４ｎｍ矿物种类不同且比例变异大；②供试土壤的负电荷量（ＣＥＣ８．２）介于９．２￣１９．１ｃｍｏｌ／ｋｇ间，永久负电荷占ＣＥＣ８．２的５０％￣６４％，阴离子交换量（ＡＥＣ）为０．７５￣２．２１ｃｍｏｌ／ｋｇ，电荷零点（ＰＺＣ）介于２．３

Abstract:Influences of Boron and Calcium on IAA content in two rape varieties with different Boron efficiency were studied under the condition of nutrient solution culture. The results show that IAA in upper leaves accumulated when both Boron and Calcium are inade

Abstract:The response of reciprocal F 1 generations crossed between Boron inefficient cultivar 9141 and Boron efficient cultivar 9118 of Brassica napus to Boron deficiency was tested under soil culture. The results obtained indicate that the mean of Boron

Abstract:用３０μｍ尼龙网将聚氯乙烯制作的根箱分为根室和外室，通过根箱试验模拟了玉米单作、花生单作、玉米／花生间作３种情况，研究了玉米／花生间作对土壤铁的有效性和花生植株铁营养状况的影响。结果表明，间作花生根际、土体中有效铁含量明显高于单作花生，其新叶中活性铁含量比单作花生高５０％，其叶绿素含量比单作花生高４倍。间作明显改善了花生的缺铁黄化症状，提高了花生和玉米的产量。

Abstract:采用土培－水培联合体系培养研究了混作对玉米铁载体的分泌和花生铁营养的影响。向营养液中供给难溶性的氢氧化铁后，在不同的时间内测定加入氢氧化铁后混作玉米铁载体的分泌数量和花生新叶中活性铁的含量。结果表明，在６￣１５ｄ中，混作玉米铁载体的分泌量高于单作玉米；花生新叶活性铁含量在加入难溶性氢氧化铁后第３ｄ时，单作、混作花生新叶活性铁含量无明显的差异，而至第９ｄ、第１５ｄ时，单作花生活性铁含量低于混作花生。

Abstract:Molybdenum deficiency seriously affected the growth and development of winter wheat on yellow brown soils in Hubei. Wheat output was significantly increased by applying molybdenum fertilizer, and wheat quality was also improved. Firstly, the Molybdenum co

Abstract:Porcine partial PGD cDNA and HSL cDNA were labeled with degoxigenin with random primed labeling method, then used in chromosomal in situ hybridization. The porcine PGD and HSL gene were mapped to 6q 25 and 6cen-q 21 , respectively.

Abstract:The brains of African ostrich have been studied by means of anatomy. Some characteristics are discovered. The average weight of total brain is 26.34 gm. The average length is 59.26 mm. The width is 42.30 mm. The cerebellum is relatively developed, which o

Abstract:Allogynogenetic crucian carp ( Carassius auratus gibelio ) was immunized by injection with levamisol (LMS), formalin killed Aeromonas hydrophila cells (FKC) and FKC with LMS (FKC+LMS) respectively. The immunoenhancement action of LMS on allogynogent

Abstract:从江苏海安和广东中山等地送检的患爱德华氏菌病的日本鳗鲡中分离到１２个菌株，经过对菌株的形态观察，直接荧光抗体法鉴定和生化特性测试，证明了其中１０个菌株为迟缓爱德华氏菌。选用其中４个菌株进行致病力测试结果表明，注射菌液后的日本鳗鲡能出现与自然发病相同的症状，并导致供试日本鳗鲡１００％死亡。对分离菌株进行的药敏试验结果表明，所有菌株均对链霉素、四环素、氯霉素、土霉素和杆菌肽比较敏感，而对红霉素、青霉素

Abstract:不同的温度、福尔马林浓度、灭活的时间以及灭活菌液的浓度均可影响中华鳖嗜水气单胞菌的灭活。本研究得到了菌液浓度为６０×１０８ｃｆｕ／ｍｌ时的９种灭活方法。通过琼脂双扩散试验对灭活菌液抗原性比较，认为２８℃、０．２％的福尔马林灭活２ｄ为鳖嗜水气单胞菌较理想的灭活方法。

Abstract:应用Ｂｅｖｅｒｔｏｎ－Ｈｏｌｔ模式，对老江河鲤鱼种群动态进行了研究。结果表明：①ｖｏｎ Ｂｅｒｔａｌａｎｆｆｙ生长方程的主要参数Ｌ∞＝９４．８ｃｍ，Ｗ∞＝１７１２６．７ｇ，ｋ＝０．１７２７，ｔ０＝－０．４８８７；②补充年龄ｔｒ为１龄，开捕年龄ｔｃ为２龄，极限年龄Ｔλ为１７龄；③自然死亡系数Ｍ＝０．１５０３，自然死亡率Ｄ＝０．１１１８；捕捞死亡系数Ｆ＝０．４７４４，捕捞死亡率Ｅ＝０．３５２８；总死亡

Abstract:通过定点观察黄连木五倍子的生长特性，结果表明，黄连木五倍子的生长发育历期短，４月中下旬至５月上中旬形成，６月中下旬至７月上中旬成熟爆裂，前期生长缓慢，６月上旬左右体积增长迅速。倍子多着生于复叶的第２、４、５、６对小叶上，在小叶上多着生于主脉中段一侧。倍子的大小主要取决于倍子种类和叶片生长情况，而与倍内蚜虫数量多少的相关性不大。

Abstract:Based on the investigation on the ecoeconomic forest protection system at minor watersched of Duanfang Valley in three gorges reservoir region, the evaluation system of the protection forest was estabtisched by means of mutiple target decision. The studie

Abstract:采用比色法测定脱氧核糖铁体系中银杏叶提取物（ＧＢＥ）清除·ＯＨ的效果；化学发光法检测次黄嘌呤黄嘌呤氧化酶鲁米诺体系中ＧＢＥ清除Ｏ·－２的效果。结果表明，银杏叶粗提物清除·ＯＨ和Ｏ·－２的效果均强于银杏叶精提物。探讨了ＧＢＥ的抗氧化机理。