2009The Korean Journal of MycologyOpen access

Oospore Production in Broth Media and Oospore Germination of Phytophthora capsici

Byung–Sup Kim, Ernest James Rin, Michael D. Coffey

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Abstract

본 연구는 P. capsici의 난포자를 다량으로 확보하기 위하여 우수한 액체 배지를 선발하고 난포자의 발아율을 조사할 뿐만 아니라 $F_1$ progeny를 확보하기 위하여 수행하였다. 공시한 8개 액체배지 중 carrot broth와 V8C broth가 난포자형성을 위해 가장 적당한 배지였다. 총 11균주의 P. capsici(CapA형)과 P. tropicalis(CapB형)를 선발하였고 P. capsici(CapA형)에 P. tropicalis(CapB형)을 교배하는 서로 다른 9개 조합의 교배에서 얻은 난포자로부터 총 129 균주의 $F_1$ hybrid progeny를 얻었으며 난포자의 발아율은 0.64-4.0%(평균 1.85%)이었다. In this study, we selected suitable broth media for mass production of Phytophthora capsici oospore, investigated oospore germination and secured $F_1$ progeny. Carrot broth and V8C broth were determined most effective for oospore formation by calculating and comparing oospore concentration produced from 8 different liquid media. Eleven strains were selected from P. capsici (CapA)/P. tropicalis (CapB) and 9 crosses were formed. Oospore progeny were produced, isolated and germinated from A1 and A2 combinations of P. capsici (CapA) with P tropicalis (CapB). This resulted in a total number of 129 $F_1$ isolates of P. capsici/P. tropicalis with a 0.64-4.0% (mean 1.85%) oospore germination.

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본 연구는 P. capsici의 난포자를 다량으로 확보하기 위하여 우수한 액체 배지를 선발하고 난포자의 발아율을 조사할 뿐만 아니라 $F_1$ progeny를 확보하기 위하여 수행하였다. 공시한 8개 액체배지 중 carrot broth와 V8C broth가 난포자형성을 위해 가장 적당한 배지였다. 총 11균주의 P. capsici(CapA형)과 P. tropicalis(CapB형)를 선발하였고 P. capsici(CapA형)에 P. tropicalis(CapB형)을 교배하는 서로 다른 9개 조합의 교배에서 얻은 난포자로부터 총 129 균주의 $F_1$ hybrid progeny를 얻었으며 난포자의 발아율은 0.64-4.0%(평균 1.85%)이었다. In this study, we selected suitable broth media for mass production of Phytophthora capsici oospore, investigated oospore germination and secured $F_1$ progeny. Carrot broth and V8C broth were determined most effective for oospore formation by calculating and comparing oospore concentration produced from 8 different liquid media. Eleven strains were selected from P. capsici (CapA)/P. tropicalis (CapB) and 9 crosses were formed. Oospore progeny were produced, isolated and germinated from A1 and A2 combinations of P. capsici (CapA) with P tropicalis (CapB). This resulted in a total number of 129 $F_1$ isolates of P. capsici/P. tropicalis with a 0.64-4.0% (mean 1.85%) oospore germination.

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Available abstract

본 연구는 P. capsici의 난포자를 다량으로 확보하기 위하여 우수한 액체 배지를 선발하고 난포자의 발아율을 조사할 뿐만 아니라 $F_1$ progeny를 확보하기 위하여 수행하였다. 공시한 8개 액체배지 중 carrot broth와 V8C broth가 난포자형성을 위해 가장 적당한 배지였다. 총 11균주의 P. capsici(CapA형)과 P. tropicalis(CapB형)를 선발하였고 P. capsici(CapA형)에 P. tropicalis(CapB형)을 교배하는 서로 다른 9개 조합의 교배에서 얻은 난포자로부터 총 129 균주의 $F_1$ hybrid progeny를 얻었으며 난포자의 발아율은 0.64-4.0%(평균 1.85%)이었다. In this study, we selected suitable broth media for mass production of Phytophthora capsici oospore, investigated oospore germination and secured $F_1$ progeny. Carrot broth and V8C broth were determined most effective for oospore formation by calculating and comparing oospore concentration produced from 8 different liquid media. Eleven strains were selected from P. capsici (CapA)/P. tropicalis (CapB) and 9 crosses were formed. Oospore progeny were produced, isolated and germinated from A1 and A2 combinations of P. capsici (CapA) with P tropicalis (CapB). This resulted in a total number of 129 $F_1$ isolates of P. capsici/P. tropicalis with a 0.64-4.0% (mean 1.85%) oospore germination.

Key concepts: Oospore, Phytophthora capsici, Germination, Biology, Botany, Pepper, Horticulture

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