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| Study on Dry Heat Treatment of Colletotrichum on Chili Pepper |
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| DOI：10.16768/j.issn.1004-874X.2021.04.014 |
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| Abstract: |
| 【Objective】The effects of dry heat treatment on dominant species of Colletotrichum - C. truncatum and C.
acutatum on chili pepper were explored.【Method】By setting different temperatures and time, the growth status of mycelia
and spores of C. truncatum and C. acutatum in vitro and the germination potential and germination rate of chili pepper
seeds under different dry heat treatments were determined and analyzed.【Result】The inhibition rate of mycelia and spores
growth of the two Colletotrichum species could reach 100% when they were dried at 55 ℃ for 1 h. Meanwhile, chili pepper
seeds under treatment at 55-66 ℃ for 1-24 h could effectively increase seedling emergence rate.【Conclusion】The growth
of Colletotrichum could be effectively inhibited and the germination rate of chili pepper seeds could be improved under this
dry heat treatment condition (at a combined interval of 55-66 ℃ and 1-24 h). The dry heat treatment conditions screened by
the current study can provide reference basis for the control of vegetable seeds borne fungi, especially Colletotrichum. |
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