논문 상세보기
pp.406-411
자포니카형 품종에서 벼멸구 저항성 육종의 효율을 향상시키고자 '삼강벼'/'낙동벼' BC5F5 세대의 여교잡집단(SNBIL)에서 개발된 DNA marker RM28493에 대하여 활용성을 검토한 결과는 아래와 같다. 1. 벼멸구 저항성 유전자 Bph1의 근동질 유전자 계통인 SNBIL61과 감수성인 주남벼가 교배된 약배양 집단에서 RM28493은 벼멸구 저항성 생물검정 성적과 일치하였다. 2. RM28493은 다양한 유전자원에서 벼멸구 저항성 유전자인 B
Rice breeding for brown planthopper (BPH) resistance is often a slow and laborious process in case of japonica rice. Marker assisted selection (MAS) would improve the efficiency of plant breeding through precise transfer of interesting target traits. In order to reconfirm the efficiency of the RM28493, we tested the marker in DH population derived a cross SNBC61 and Junambyeo. the marker allele of RM28493 were co-segregated with BPH bioassay data. To get the allelic information of RM28493 for MAS to brown planthopper resistance, 118 varieties were tested. The RM28493 divided as one resistance specific allele and three susceptible type alleles. Eighteen varieties containing the Bphl showed the resistant-type allele and 100 susceptible varieties were susceptible-type allele to the marker of RM28493. To get a gene pyramiding information, we compared the marker allele of RM28493 in various BPH resistance resource, The RM28493 showed a different allele between Bphl resources and Bph3, bph4 resource. indicating that the RM28493 can be used as specific marker for detecting Bphl gene in selection of gene pyramiding lines such as Bphl and Bph3, Bphl and bph4. Thereby, the RM28493 can be used to select resistant genotype of the Bphl in MAS breeding programs of rice.
