论文部分内容阅读
试验结果表明，番茄的抗病品种中游离态Ｐｕｔ（腐胺）和Ｓｐｄ（亚精胺）的含量较高，且游离态Ｓｐｄ／Ｓｐｍ（精胺）显著高于感病品种。番茄植株中结合态Ｐｕｔ和Ｓｐｄ的含量低于游离态且感病品种高于抗病品种。ＴＭＶ（烟草花叶病病毒）侵染使得番茄抗、感品种植株体内游离态和结合态多胺的水平不同程度地提高。一般地说，Ｐｕｔ的含量在接种后４８ｈ之前大量合成，而Ｓｐｍ的含量在接种４８ｈ之后上升幅度较大。总之，较高含量的游离态Ｐｕｔ和Ｓｐｄ及较大的游离态Ｓｐｄ／Ｓｐｍ值有利于植株抗病。
The results showed that the contents of free Put (Putamine) and Spd (spermidine) in the resistant varieties of tomato were higher, and the free Spd / Spm (spermine) was significantly higher than the susceptible varieties. The contents of bound Put and Spd in tomato plants were lower than those in free state and the susceptible varieties were higher than those in resistant varieties. Infection with TMV (Tobacco mosaic virus) caused the levels of free and bound polyamines in tomato resistant and susceptible plants to varying degrees to increase. In general, the content of Put was synthesized 48 h before inoculation, while the content of Spm increased after 48 h of inoculation. In conclusion, the higher content of free Put and Spd and the larger free Spd / Spm values are good for plant resistance.