日光温室黄瓜新品种中农21号的选育

中农21号是以优良自交系0227和00207为亲本配制而成的一代杂种。植株生长势强,早熟,丰产,耐低温弱光能力强；瓜条长棒形、顺直,瓜色深绿,瓜把短,瘤小,刺白、密,腰瓜长35 cm左右,横径约3 cm,单瓜质量200 g左右,商品瓜率高,风味品质好；高抗白粉病,抗角斑病,中抗黑星病、枯萎病、CMV、WMV,日光温室越冬栽培每667 m~2产量10 000 kg左右；适宜日光温室越冬茬和秋冬茬栽培,已在山东、河北、河南、辽宁等省推广1 333 hm~2。     

节瓜新品种夏冠1号的选育

夏冠1号是以自交系7213作母本,以自交系1632作父本配制而成的节瓜一代杂种。植株生长势较强,分枝性强,主侧蔓结瓜。早熟,春栽从播种至始收65~80d(天),夏秋栽从播种至始收45~55d(天)。瓜圆筒形,皮青绿色,有光泽,被茸毛,无棱沟,瓜长16~17cm,横径5.5cm,单瓜质量450~500g。肉质嫩滑,微甜。耐热、耐寒能力较强,高抗枯萎病,对疫病的抗性强于对照江心4号。每667m2产量3000~4000kg,适宜华南地区春、夏、秋季种植。     

辣椒新品种临椒1号的选育

临椒1号母本94-18是从尖椒22号中经提纯复壮、筛选出的优良自交系,父本94-33是国外引进品种匈奥804经多代自交分离出的优良自交系。该品种生长势强,果实羊角形,基部皱折,果色深绿,纵径23.0cm左右,横径3.0cm,单果质量40~60g,辣味浓。对疫病、病毒病和炭疽病的抗性强于对照尖椒22号。中熟,从定植到始收60d(天),一般每667m2产量2860kg左右,适宜鲜食、制酱。     

茄子新品种晋紫长茄的选育

晋紫长茄是以临猗紫长茄经多代自交选育的自交系104-126-43-18为母本,以柳林长茄经多代自交选育的自交系237-9-27-11为父本配制而成的一代杂种。植株直立,生长势强,结果能力强;果实长筒形,果皮鲜紫光亮,果肉白色,肉质细嫩松软,口感好,单果质量500g左右;中早熟,从开花到采收15~20d(天),每667m2产量5000kg左右;对黄萎病的抗性强于对照短把黑。适合春夏季露地栽培。     

丝瓜新品种早优1号的选育

早优1号是以S-14为母本,S-62为父本配制而成的一代杂种。早熟,植株生长势强,第1雌花节位为第5~8节,节成性好,连续结果能力强,果实长棒形,匀直,果皮绿色,表面被蜡粉,果肉脆嫩,味甜,商品性好,果实纵径30cm左右,横径5~6cm,单果质量400~550g,每667m2产量2500kg左右。     

青麻叶大白菜新品种秋玉78的选育

秋玉78是由两个青麻叶类型自交不亲和系F115-93和L132配制而成的中熟大白菜一代杂种。生育期75d(天)左右,叶球高桩直筒形,株高58cm,结球紧实,球高52cm,单球质量3.5~4.0kg;株型紧凑直立,叶片浓绿油亮,核桃纹适中,中肋绿色;高抗病毒病、软腐病,抗霜霉病,耐贮性好,商品性好,粗纤维含量少;每667m2净菜产量7300~7800kg,已在天津、河北、内蒙古、山东、山西、云南等地推广种植520hm2。     

Expression of telomerase inhibitor Pinx1 in leukemia cells and its correlation with telomerase activity

AIM:To study the expression of telomerase inhibitor Pinx1 in acute leukemia cells and during the differentiation of acute promyelocytic leukemia cells,and to realize its effect on telomerase activity.METHODS:Realtime quantitative PCR with fluorescence probe hybridization was used to measure the expression of Pinx1 and hTERT mRNA in acute leukemia cells and during differentiation of NB4 cells induced by ATRA.The correlations between Pinx1 and hTERT expression were also analyzed.RESULTS:Pinx1 mRNA expression in acute leukemia samples (0.00312,5.42×10-4-0.024) was significantly higher than that in normal bone marrow mononuclear cells (7.89×10-4,0-0.00863,P<0.01).The expression of Pinx1 mRNA had significant positive correlation with hTERT mRNA expression (r=0.296,P<0.05).Pinx1 mRNA expression decreased during differentiation,its expression was positive correlated with hTERT mRNA expression (r=0.900,P<0.05).CONCLUSIONS:As an inhibitor of telomerase,however,Pinx1 also had the same direction of regulation with telomerase activity in acute leukemia cells,suggesting its expression variation may be a subsequent reaction induced by that of hTERT to stabilize telomerase activity.The exact mechanisms remained to be verified.     

Effect of protein kinase C signal pathway on resistin expression in 3T3-L1 adipocytes

AIM：To investigate the effect of protein kinase C on resistin expression in 3T3-L1 adipocytes.METHODS：The differentiated 3T3-L1 adipocytes were incubated with 50 nmol/L phorbol 12-myristate 13-acetate (PMA) or 5 μmol/L Ro-31-8220 for 24 h.Expression of resistin mRNA was detected by RT-PCR and expression of resistin protein was detected by Western blotting.RESULTS：Compared with control,PMA increased the expression of resistin mRNA and protein in 3T3-L1 adipocytes significantly (P<0.01),while Ro-31-8220 decreased the expression of resistin mRNA and protein in 3T3-L1 adipocytes obviously (P<0.01).CONCLUSION：Protein kinase C signal pathway may regulate resistin expression in 3T3-L1 adipocytes.     

1-甲基环丙烯对高温下香蕉果实后熟的影响

以香蕉果实为试材,研究了1-甲基环丙烯(1-MCP)对高温逆境下香蕉果实后熟生理的影响。结果表明:35℃高温下贮藏的香蕉果实出现了明显的青皮熟现象,而0.5μL/L的1-MCP处理24h后可显著抑制高温下贮藏果实硬度的降低,延缓果皮细胞膜透性的升高,同时有效地延迟了果肉中淀粉酶活性升高、淀粉含量下降及可溶性糖含量上升。1-MCP处理果实于35℃下贮藏9d后移入20℃环境,进一步延缓了这些后熟生理变化。1-MCP和高温均抑制了果皮叶绿素含量下降,因此1-MCP处理减轻了香蕉热害的程度,延长了果实在高温下的贮藏寿命。     

丰蜜3号厚皮甜瓜的选育

丰蜜3号厚皮甜瓜是以自交系M3为母本、自交系0063为父本配制而成的短椭圆形厚皮甜瓜一代杂种。中早熟,果实发育期30-35d。单果重1.4kg左右,每667m2产量约2200kg。皮色浅黄,覆10条浅绿色纵沟,果面具细网纹;果肉白色,肉厚约3.5cm,肉质结实稍脆,味清香,果实中心可溶性固形物含量17%左右。