高产、稳产、抗病杂交水稻新组合T优551的选育及利用

选用性状互补的地谷B、珍汕97B和龙特浦B配制成珍汕97B／地谷B／／龙特浦B复交组合，采用系谱法复交F4选优株与珍汕97A测交，并后代连续选性状似龙特浦B的优株与珍汕97A回交至BC5，育成T55A。用它与恢复系晚R-1配制成杂交稻组合T优551，具有高产、稳产、抗性好等特性，于2004年通过福建省品种审定委员会审定，具有较好的推广应用前景。     

花生新品种泉花551高产特性研究

以粤油551-116为对照品种,对泉花551的生育特性、光合特性、开花结荚习性等进行研究,探讨其高产特性,结果表明:泉花551开花量适中且集中在前期,有效花率和成针率高;叶片叶绿素含量高,叶面积指数大,净同化率高,尤其在中后期仍保持较高的经济系数。     

花生新品种泉花551引种试验初报

2012年在厦门市同安区引进泉花551进行试种试验。结果表明,泉花551荚果和籽仁产量均比我区主栽品种泉花7号、泉花6号和白沙1016(CK)极显著增产。与3个CK相比,泉花551平均荚果产量5146.9 kg·hm-2,荚果产量增产幅度在30.8%-111.5%;平均籽仁产量3700.5 kg·hm-2,籽仁增产幅度在32.0%-110.8%。泉花551抗病(逆)性强,生育期适中,适合在我区推广应用。     

花生新品种泉花551丰产性和稳定性分析

利用DPS数据处理系统对2011、2012年全国（长江片）花生区域试验资料进行丰产性和稳定性分析。结果表明,2011、2012年泉花551区试荚果产量分别为4699．5、5086．5kg·hm^-1,分别居参试品种的第2位和第1位,比中花15（CK）分别增产7．17％和13．12％,均达极显著水平;荚果产量主效应分别为0．26和0．50,说明该品种丰产性好;回归系数分别为1．1953和0．9596,说明对环境反应不敏感;高稳系数分别为71．53％和80．17％,说明该品种稳定性较好;由品种×地点互作效应值可以看出,泉花551适宜在长江中下游大部分地区推广种植。     

Long non-coding RNA PVT1 regulates effect of miR-551 on migration and invasion abilities of ovarian cancer through Wnt signaling pathway

AIM: To investigate the expression of long non-coding RNA PVT1 in ovarian cancer and the role of PVT1 in migration and invasion abilities of ovarian cancer cells.METHODS: The expression of PVT1 in ovarian cancer tissue, normal ovarian tissue and different ovarian cancer cell lines was detected by qPCR. Transwell assay was used to detect the invasion ability of ovarian cancer cells after PVT1 silencing. The migration ability of the ovarian cancer cells after PVT1 silencing was detected by scratch test. The interaction between PVT1 and microRNA (miR)-551 was analyzed by dual-luciferase reporter assay. The effect of miR-551-inhibitor on the invasion and migration abilities of ovarian cancer cells after PVT1 silencing was detected by Transwell assay and scratch test. The expression of Wnt signaling pathway-related proteins was determined by Western blot after PVT1 silencing. The effects of PVT1 silencing on tumor weight and volume of ovarian cancer were examined by subcutaneous tumor transplantation in nude mice.RESULTS: The expression of PVT1 in ovarian cancer tissue was significantly higher than that in normal ovarian tissue (P<0.05). The expression level of PVT1 in ovarian cancer cell line ES-2 was the highest. PVT1 silencing inhibited the invasion and migration abilities of the ovarian cancer cells. After PVT1 silencing, miR-551-inhibitor promoted the invasion and migration abilities of the ovarian cancer cells. The expression of Wnt signaling pathway-related proteins was decreased after PVT1 silencing (P<0.05). Compared with negative control group, the tumor volume and weight in PVT1-siRNA group were significantly decreased (P<0.05).CONCLUSION: PVT1 plays an important role in the development of ovarian cancer. PVT1 regulates the invasion and migration abilities of ovarian cancer cells through Wnt signaling pathway.     

单粒播种不同密度对‘泉花551’产量及品质的影响

为了研究单粒播种条件下不同种植密度对花生植株农艺性状、光合特性、产量及品质的影响,以高产、优质、适应性广的花生新品种‘泉花551’为材料,采用大田试验方法筛选其最优种植密度,为推广应用提供依据。在单粒播种条件下,花生株高、干物质积累、叶面积指数及光合势与种植密度呈正相关态势;单株分枝数、结果枝数、荚果数、单株生产力和叶绿素含量与种植密度呈负相关态势。在本试验设置的播种密度范围内产量随密度的增加呈先增加后降低的变化,以处理R₄产量最高,与对照相比增产达显著水平,其较高的产量与其合理的干物质分配和较强的光合能力等有关。不同密度处理对花生籽仁品质影响较少。各处理以R₄处理最适宜,既可促进单株健壮发育,充分发挥单株增产潜力,同时能协调个体与群体的发展,促进群体荚果产量的提高,实现花生的增产增效。     

正大"551"料补饲奶羔羊快速育肥试验

利用正大“５５１”料补饲奶羔羊，通过３０ｄ的饲喂试验表明，母羊在相同的饲养管理水平下，试验组奶羔羊平均日增重分别比对照组提高１００％和１００％，差异极显著。经济效益比对照组分别提高４０．４９％和３８．６７％。     

正大"551"料补饲奶羔羊快速育肥试验

利用正大"551"料补饲奶羔羊,通过30d的饲喂试验表明,母羊在相同的饲养管理水平下,试验组奶羔羊平均日增重分别比对照组提高100%和100%(试验Ⅰ组和Ⅱ组),差异极显著(P<0.01).经济效益比对照组分别提高40.49%和38.67%.