【目的】筛选出金橘保果壮果的理想植物生长调节剂,以促进金橘产业的健康快速发展。【方法】于金橘谢花7 d后喷施30 m L/L赤霉素(GA3),间隔7和14 d后再分别喷施一次30 m L/L GA3+10 m L/L萘乙酸(NAA)(处理1)、5 m L/L CTK+10 m L/L NAA...【目的】筛选出金橘保果壮果的理想植物生长调节剂,以促进金橘产业的健康快速发展。【方法】于金橘谢花7 d后喷施30 m L/L赤霉素(GA3),间隔7和14 d后再分别喷施一次30 m L/L GA3+10 m L/L萘乙酸(NAA)(处理1)、5 m L/L CTK+10 m L/L NAA(处理2)、1 m L/L噻苯隆(处理3),以喷清水为对照,观察测定各处理的坐果率、果实生长发育规律、产量及单果重。【结果】以处理1和处理3的金橘坐果率较高,均在20.00%以上,比对照提高了49.96%和46.68%。处理2和处理3的果实生长发育较快,其果实横径比对照增加了3.12和2.80 mm,纵径比对照增加了3.66和1.97 mm。在单果重与产量方面,也是以处理2、处理3的效果较显著,单株产量较对照提高了13.5%和11.6%,单果重比对照增加了34.0%和26.9%。【结论】在金橘谢花后7 d喷施一次30 m L/L GA3,间隔7和14 d后再分别喷施一次5 m L/L CTK+10m L/L NAA,可有效提高果实产量和经济效益,建议生产上大力推广应用。展开更多
Isolate PD1 of Phytophthora was isolated from diseased black pericarp wax gourd in Guangxi in 2005. The morphological and biological characters of the isolate were examined, and its sequence of ribosomal DNA-ITS was a...Isolate PD1 of Phytophthora was isolated from diseased black pericarp wax gourd in Guangxi in 2005. The morphological and biological characters of the isolate were examined, and its sequence of ribosomal DNA-ITS was analyzed. The range of growth temperature of the isolate was 10-37℃ and the optimal one was 31℃. The pathogen was sensitive to 10 mg/kg of malachite green, and its ability for starch utilization was weak. A wide host range of the pathogen was confirmed by artificial inoculation. The sizes of sporangia were (37.5-71.7) μm×(20.8-47.5) μm (av. 55.0 μm×30.4 μm ). Microcycle conidiation of the pathogen was observed. The pathogen was identified as Phytophthora drechsleri Tucker based on its morphological and biological characters as well as ribosomal DNA-ITS sequence.展开更多
采用低温精练剂TANNEX?BE,配以氧漂活化剂TANEDE?GREEN对棉筒子纱进行70℃低温前处理。优化的工艺参数为:27.5%H2O24 m L/L,TANNEX?BE 0.5 m L/L,TANEDE?GREEN 0.9 m L/L,70℃处理50 min。处理后纱线白度为80.56%,毛效11.8 cm/30 min,...采用低温精练剂TANNEX?BE,配以氧漂活化剂TANEDE?GREEN对棉筒子纱进行70℃低温前处理。优化的工艺参数为:27.5%H2O24 m L/L,TANNEX?BE 0.5 m L/L,TANEDE?GREEN 0.9 m L/L,70℃处理50 min。处理后纱线白度为80.56%,毛效11.8 cm/30 min,纱线强力301.84 c N,能够满足后续染色加工的要求。展开更多
文摘【目的】筛选出金橘保果壮果的理想植物生长调节剂,以促进金橘产业的健康快速发展。【方法】于金橘谢花7 d后喷施30 m L/L赤霉素(GA3),间隔7和14 d后再分别喷施一次30 m L/L GA3+10 m L/L萘乙酸(NAA)(处理1)、5 m L/L CTK+10 m L/L NAA(处理2)、1 m L/L噻苯隆(处理3),以喷清水为对照,观察测定各处理的坐果率、果实生长发育规律、产量及单果重。【结果】以处理1和处理3的金橘坐果率较高,均在20.00%以上,比对照提高了49.96%和46.68%。处理2和处理3的果实生长发育较快,其果实横径比对照增加了3.12和2.80 mm,纵径比对照增加了3.66和1.97 mm。在单果重与产量方面,也是以处理2、处理3的效果较显著,单株产量较对照提高了13.5%和11.6%,单果重比对照增加了34.0%和26.9%。【结论】在金橘谢花后7 d喷施一次30 m L/L GA3,间隔7和14 d后再分别喷施一次5 m L/L CTK+10m L/L NAA,可有效提高果实产量和经济效益,建议生产上大力推广应用。
文摘Isolate PD1 of Phytophthora was isolated from diseased black pericarp wax gourd in Guangxi in 2005. The morphological and biological characters of the isolate were examined, and its sequence of ribosomal DNA-ITS was analyzed. The range of growth temperature of the isolate was 10-37℃ and the optimal one was 31℃. The pathogen was sensitive to 10 mg/kg of malachite green, and its ability for starch utilization was weak. A wide host range of the pathogen was confirmed by artificial inoculation. The sizes of sporangia were (37.5-71.7) μm×(20.8-47.5) μm (av. 55.0 μm×30.4 μm ). Microcycle conidiation of the pathogen was observed. The pathogen was identified as Phytophthora drechsleri Tucker based on its morphological and biological characters as well as ribosomal DNA-ITS sequence.
文摘采用低温精练剂TANNEX?BE,配以氧漂活化剂TANEDE?GREEN对棉筒子纱进行70℃低温前处理。优化的工艺参数为:27.5%H2O24 m L/L,TANNEX?BE 0.5 m L/L,TANEDE?GREEN 0.9 m L/L,70℃处理50 min。处理后纱线白度为80.56%,毛效11.8 cm/30 min,纱线强力301.84 c N,能够满足后续染色加工的要求。
