论文部分内容阅读
１９９１年１１号台风（平均风力１０级，阵风１１～１２级）袭击后，调查了４个橡胶野生种质的断倒率，并经代换为反正弦角度值分析其抗风能力，发现其中统编号为１０８、１３２和３０号３个种质的断倒率分别为０．２５％、０．２７％和２．４０％，与对照品系ＰＲ１０７（断倒率为０．２７％）差异显著，表明其抗风力与抗风力较强的ＰＲ１０７差不多。但１０８和１３２号的抗风能力显著和极显著地优于ＲＲＩＭ６００号。１２５号断倒率为１３．９％，与ＰＲ１０７差异显著，抗风能力较差。根据成龄树枝条在动负荷下的抵抗冲击能力和胶树外部形态结合大田抗风情况分析，认为橡胶树抗风效应至少可分为木质抗风类型和外部形态抗风类型。因此，对种质资源抗风性状的鉴定评价应用综合指标进行分析，对抗风种质也要区分不同类型进行合理使用。
1991 Typhoon 11 (mean wind 10, gust 11 ~ 12) after the attack, investigated four rubber wild germplasm off rate, and replaced by the arc of the arc value analysis of its wind resistance and found that The off rates of three germplasms with the accession numbers 108, 132 and 30 were 0.25%, 0.27% and 2.40%, respectively, which were significantly different from that of the control line PR107 (the off rate was 0.27%) , Which shows that its wind resistance and wind resistance stronger PR107 almost. However, Wind Resistance 108 and 132 were significantly and significantly superior to RRIM 600. 125 off rate was 13.9%, significant difference with PR107, poor wind resistance. According to the impact resistance of mature tree branches under dynamic load and the external morphology of gum trees combined with the field wind resistance analysis, the wind-resistant effect of rubber trees can be divided into at least wind-resistant wood type and external wind-resistant type. Therefore, the identification and evaluation of wind-resistant traits of germplasm resources should be analyzed by using comprehensive indexes, and different types of wind-resistant germplasm should also be used reasonably.