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花期不同处理方法对辣椒繁种产量和质量的影响
作者: 花期不同处理方法对辣椒繁种产量和质量的影响 
单位: (广西农业科学院 蔬菜研究所 南宁 530007) 
关键词: 辣椒 繁种 花蕾层次 磷酸二氢钾(KH2PO4) 隔离方式 
分类号:S641.3
出版年,卷(期):页码:2017,48(7):1249-1252
摘要:

【目的】分析花期不同处理方法对繁种辣椒种子产量和质量的影响,为不良气候条件及缺少设施条件地区扩繁辣椒材料提供参考依据。【方法】在露地栽培辣椒材料A014,开花期设选留不同花蕾层次、叶面喷施磷酸二氢钾(KH2PO4)次数及不同花蕾隔离方式3种处理,以其相应的自然结果方式为对照(CK1、CK2和CK3),对比分析各处理辣椒的坐果数、千粒重、发芽率和种子产量。【结果】选留2~6层花蕾留果收获的繁种辣椒种子千粒重为3.3002 g,极显著高于CK1和选留7~10层花蕾留果收获的辣椒种子(P<0.01),发芽率为92.33%,显著高于选留7~10层花蕾留果收获的辣椒种子(P<0.05,下同),平均单株坐果数为31.57个,显著低于选留7~10层花蕾留果收获的辣椒,小区种子产量为38.40 g,显著高于CK1,与选留7~10层花蕾留果收获的辣椒种子产量差异不显著(P>0.05,下同);叶面喷施2次KH2PO4的繁种辣椒种子千粒重和发芽率分别为2.8839 g和90.33%,显著高于CK2和叶面喷施1次KH2PO4,叶面喷施1次KH2PO4的辣椒种子千粒重与CK2差异不显著;网罩隔离花蕾的辣椒坐果率为75.95%,显著低于CK3,但显著高于蒙花隔离花蕾的辣椒坐果率。【结论】在露地进行辣椒材料扩繁时,选2~6层花蕾留果、采取网罩隔离花蕾及叶面喷施2次KH2PO4可提高繁种辣椒的产量和质量。

【Objective】To provide references for pepper seed multiplication in areas which were lack of facilities or with bad weather condition,effects of different treatments at flowering stage on yield and quality of seed of seed-breeding peppers were analyzed. 【Method】With A014 as materials,the peppers were cultivated in the open. Three treatments, remaining different bud levels at flowering stage,spraying times of monopotassium phosphate(KH2PO4) on leaves and various isolation methods for bud at flowering stage,were set. The corresponding natural fruit bearing ways were controls(CK1,CK2 and CK3). Fruit-setting number,1000-seed weight,germination rate and yield of pepper seed were analyzed. 【Result】The results showed that,1000-seed weight of peppers remaining 2-6 bud levels(3.3002 g) was extremly significantly higher than that of CK1 and 7-10 levels(P<0.01),and the germination rate of 2-6 bud levels(92.33%) was significantly higher than that of peppers remaining 7-10 bud levels(P<0.05, the same below). However,the average fruit-setting number per plant(31.57) was significantly lower than that of peppers remaining 7-10 bud levels. Plot yield of seed in remaining 2-6 bud levels group(38.40 g) was significantly higher than that of CK1,but there was no significant difference between it and remaining 7-10 bud levels(P>0.05, the same below).1000-seed weight(2.8839 g) and germination rate(90.33%) of foliar spraying(KH2PO4 twice treatment were higher than those of CK2 and foliar spraying KH2PO4 only once. However there was no significant difference between foliar spraying KH2PO4 once treatment and CK2 for 1000-seed weight. Average fruit-setting rate in treatment which isolated bud with net(75.95%) was significantly lower than that of CK3,but significantly higher than that of isolated with cotton. 【Conclusion】Pepper seed yield and quality will be increased when remaining 2-6 bud levels to bear peppers, isolating bud with net and foliar spraying KH2PO4 twice.

基金项目:
广西科学研究与技术开发计划项目(桂科能14121008-4-2);广西主席基金项目(1324102);广西自然科学基金项目(2013GXNSFBA019060)
作者简介:
*为通讯作者,王日升(1976-),副研究员,主要从事辣椒及特色蔬菜栽培与育种研究工作,E-mail:shengriwang@126.com。赵虎(1987-),主要从事辣椒遗传育种研究工作,E-mail:zh107100421@126.com
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