瓠瓜新品种早杂7号的选育

早杂7号是以J138-1-5-6-1-2为母本,以Z2-3-5-8-1为父本配制而成的早熟瓠瓜一代杂种。田间长势中等,早熟性优;商品瓜长35cm左右,横径6.0cm,单瓜质量0.6kg左右;瓜形匀称,瓜皮翠绿有光泽,品质好,VC含量高,坐果率高。适应性强,特别适合浙江、山东、福建等地保护地早熟栽培,也适合保护地秋延后栽培和露地栽培。     

茄子新品种中丰红茄的选育

中丰红茄是以自交系HY8为母本,以自交系GD6为父本配制而成的茄子一代杂种。中熟,植株生长势较强,耐热,采收期长;分枝性中等,主茎第7~8节着生门茄,果实棍棒形,纵径19.9cm,横径5.6cm。果皮深紫红色,肉色乳白,肉质致密,品质佳;单果质量0.27kg左右。中丰红茄田间对青枯病、黄萎病、炭疽病的抗性强于对照油罐茄和广红茄。每667m2平均产量为4560kg。适合在湖南、湖北、云南、四川、重庆等地栽培。     

小果型西瓜新品种苏蜜8号的选育

苏蜜8号是以SW032为母本,以SW058-1为父本配制而成的小果型西瓜一代杂种。早熟,果实发育期约30d(天)。植株生长势中等,耐低温弱光,易坐果。果实高圆形,单果质量1.8~2.3kg。果皮底色浅绿,覆深绿色窄条带,果皮厚0.4~0.5cm。果肉黄色,中心可溶性固形物含量11.0%~12.2%,质地酥嫩,汁液多,纤维少,风味佳。每667m2产量2000~2500kg,适宜长江中下游地区春季大棚栽培。     

辣椒新品种海丰1052

海丰1052是以08-123为母本,F07-253-2-1为父本配制的早熟鲜食线椒一代杂种。始花节位为第7~8节,果实顺直,果面光滑,果肩略皱,辣味较强,青熟果亮绿色,老熟果鲜红色,果实纵径31.2cm,横径1.5cm,平均单果质量为32.6g,VC含量为672mg·kg-1,可溶性糖含量1.7g·kg-1,蛋白质含量为14.0g·kg-1,辣椒素含量为0.25g·kg-1。抗CMV、TMV,中抗疫病。一般每667m2产量3000kg左右。适合北方露地、秋延后大棚栽培,广东、广西、山西、陕西等地露地栽培。     

辣椒新品种驻椒21的选育

驻椒21是以辣椒雄性不育两用系AB0582为母本,以自交系B0318为父本选育而成的辣椒一代杂种。早熟,全生育182d(天)果实羊角形,果长19.2cm,果宽3.7cm,平均单果质量44.6g,青熟果黄绿色,每667m2产量3380kg左右,辣椒素含量26.2mg·kg-1,VC含量1040mg·kg-1。适宜早春保护地和春露地地膜覆盖栽培。     

韭菜迟眼蕈蚊在不同寄主上产卵及对LED光趋性的研究

为了实现活虫捕捉,预测田间种群发生规律,了解田间种群抗性发生动态,通过韭菜迟眼蕈蚊在4科9种不同寄主上的产卵趋性和对6种不同颜色LED光趋性测定,获得最佳寄主与光源,结合韭菜迟眼蕈蚊采集笼制备与野外田间应用,成功获得活虫。韭菜迟眼蕈蚊在马铃薯上产卵量最大,为93.56粒,占产卵总量的45.27%,且对绿色光趋性最强,诱虫量达26.75只,占全部诱虫量的40.38%。在韭菜迟眼蕈纹采集笼的野外应用中,露地捕虫量为700~800只,温室100~200只,大棚300~400只。     

豇豆四倍体的诱导及鉴定

用浓度为0.1%~0.3%的秋水仙素处理二倍体豇豆子叶期的茎尖生长点,获得同源四倍体(2n=4x=44),并对其进行形态学、细胞学、农艺学鉴定。结果表明:经0.2%秋水仙素处理4次获得同源四倍体的效果最佳,四倍体诱变率为2.809%;与二倍体相比,四倍体植株叶片、花器官、荚果等均表现巨大性,气孔密度和单个荚果种子数降低;用流式细胞仪进行倍性鉴定,豇豆二倍体DNA相对含量为250,四倍体为500,与根尖染色体鉴定结果一致。     

Effect of rhynchophylline on TGF-β1/Smad pathway for processing ventricular remodeling in spontaneously hypertensive rats

AIM: To investigate the effect of rhynchophylline (Rhy) on blood pressure, cardiac hypertrophy and myocardial fibrosis in spontaneously hypertensive rats (SHR). METHODS: Spontaneously hypertensive rats were randomly divided into model group, high dose (10 mg·kg^-1·d^-1) and low dose (2.5 mg·kg^-1·d^-1) group of rhynchophylline, captopril group (17.5 mg·kg^-1·d^-1). Wistar-Kyoto rats were used as normal control. Respectively, systolic blood pressure was measured by tail cuff every 2 weeks. After 10 weeks, heart weight index and left ventricular weight index were calculated. The myocardial hydroxyproline and plasma angiotensin Ⅱ were detected. Moreover, basic myocardial histopathological changes and myocardial collagen fibres were observed by HE staining and Masson staining, respectively. The protein expression of TGF-β₁ and Smad3 in the myocardium was measured by the methods of immunohistochemistry and Western blot. RESULTS: Compared with SHR model group, Rhy significantly reduced blood pressure (P<0.05), the levels of HYP in the myocardium (P<0.05) and the levels of AngⅡ in the plasma (P<0.01). The pathological damages of the myocardial tissues and collagen deposition were attenuated. The protein expression of TGF-β₁ and Smad3 was significantly reduced by the treatment with Rhy (P<0.01). CONCLUSION: Rhynchophylline reduces blood pressure and adjusts to improve ventricular remodeling of SHR. The mechanism may be involved in the TGF-β₁/Smad pathway and reducing AngⅡ content.     

Effect of peroxisome proliferator-activated receptor γ agonist rosiglitazone on intestinal injury in rats undergoing orthotopic autologous liver transplantation by inhibiting inflammatory response

AIM: To investigate the effect of rosiglitazone, a peroxisome proliferators-activated receptor γ(PPARγ) agonist, on the expression of PPARγ, the activation of NF-κB and intestine injury in the rats undergoing orthotopic autologous liver transplantation(OALT).METHODS: Sprague-Dawley male rats were randomly divided into 4 groups:control group, sham group, OALT group and rosiglitazone(0.3 mg/kg, iv) pretreatment(ROS+OALT) group. The OALT model was established, and the intestinal tissues were collected 8 h after the liver reperfusion. The intestinal tissue sections were stained to visualize the damage. The expression of PPARγ and NF-κB in the tissues, the concentrations of diamine oxidase(DAO) and fatty acid-binding protein 2(FABP2) in the serum and the concentration of TNF-α and IL-6 in the tissues were measured.RESULTS: Compared with sham group, the intestinal mucosa of the rats showed obvious pathological injury after liver reperfusion in OALT group and ROS group, the Chiu,s scores of intestinal mucosa was significantly higher, and the serum concentrations of DAO and FABP2 increased(P<0.05). After rosiglitazone pretreatment, the injury of intestinal mucosa of the rats was alleviated, the Chiu,s scores was lower and the serum concentrations of DAO and FABP2 decreased(P<0.05), the PPARγ expression was obviously up-regulated in the intestinal tissues, the nuclear translocation of NF-κB was reduced and the concentrations of IL-6 and TNF-α were decreased.CONCLUSION: During perioperative period of OALT in rats, the inflammatory responses are obvious. Furthermore, obvious intestinal injury occurs. PPARγ agonist rosiglitazone obviously up-regulates PPARγ expression and inhibits the inflammation in the intestines, thus protecting against intestinal injury in rats undergoing OALT.     

不同剂量~(60)Co-γ射线对小麦、水稻幼苗生长的影响

用10—30KR剂量~(60)CO—γ射线处理小麦中引15、St和水稻沪B干种子、幼苗生长期胚根、子叶发育受到明显抑制.对幼苗生长的影响后期(萌发5天后)比早期(开始萌发至萌发第5天)明显,芽鞘的发育对γ射线不敏感.过氧化物酶同工酶的分析结果表明,发育受抑的小麦St、水稻沪B胚根中各增加1—2条负极酶带;发育受抑的小麦中引15、St、水稻沪B子叶中,过氧化物酶同工酶没有产生变化,而从外部形态特征上看没有变化的中引15芽鞘中比对照多2条正极带.上述结果表明,经r射线照射后,植物外部形态特征的变化与内部过氧化物酶同工酶的变化并不完全相关.