Mapping quantitative trait loci of Meloidogyne graminicola resistance and tolerance in a recombinant inbred line population of Oryza glaberrima x O. sativa

被引：8
|
作者：
Galeng Lawilao, Judith [1 ,2 ,3 ]
Mallikarjuna Swamy, B. P. [3 ]
Kumar, Arvind [3 ]
Nadong Cabasan, Ma. Teodora [4 ]
De Waele, Dirk [2 ,5 ]
机构：
[1] Benguet State Univ, Coll Agr, Dept Plant Pathol, La Trinidad 2601, Benguet, Philippines
[2] Univ Leuven, Fac Biosci Engn, Dept Biosyst, Lab Trop Crop Improvement, Willem de Croylaan 42, B-3001 Leuven, Belgium
[3] Int Rice Res Rice Inst IRRI, Dapo Box 7777, Manila, Philippines
[4] Univ Southern Mindanao, Coll Arts & Sci, Dept Biol Sci, Kabacan 9407, Cotabato, Philippines
[5] North West Univ, Unit Environm Sci & Management, Private Bag X6001, ZA-2520 Potchefstroom, South Africa
来源：
NEMATOLOGY | 2019年 / 21卷 / 04期
关键词：
African rice; Asian rice; breeding; Oryza sativa; root-knot nematode; SSR markers; ROOT-KNOT NEMATODE; RICE CULTIVARS; CYST-NEMATODE; HOST RESPONSE; AFRICAN RICE; UPLAND RICE; YIELD; LOWLAND; GROWTH; REPRODUCTION;
D O I：
10.1163/15685411-00003222
中图分类号：
Q95 [动物学];
学科分类号：
071002 ;
摘要：
Host response of BC2F3 recombinant inbred line (RIL) population derived from a cross between African rice (CG14) and Asian rice (IR64) genotypes was evaluated in the field and quantitative trait loci (QTLs) that confer resistance and tolerance to Meloidogyne graminicola were mapped using SSR markers. Of the 155 BC2F3 progenies evaluated, 23 were resistant and six were partially resistant based on the number of second-stage juveniles (J2) per root system and J2 per g roots. Based on yield reduction, 23 progenies were identified as tolerant and 14 were less sensitive to M. graminicola infection. QTLs related to resistance were detected on chromosomes 6, 7 and 12. QTL for tolerance linked to percentage yield reduction was mapped on chromosome 5. QTLs linked to fresh root weight, dry root weight, dry shoot weight, percentage filled grains per panicle and yields were also mapped. QTLs identified will be useful in a breeding programme to develop M. graminicola-resistant and tolerant rice cultivars.
引用
收藏
页码：401 / 417
页数：17
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