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Exploiting genetic diversity in Citrullus spp. to enhance watermelon cultivars
Levi, A.1; Thies, J. A.1; Wechter, W. P.1; Kousik, C.1; Ling, K.1; Harrison, H.1; Simmons, A.1; Reddy, U. K.2; Nimmakayala, P.2; Fei, Z.3; Mitchell, S.4; Xu, Y.5; Tadmor, K.6; Katzir, N.6
通讯作者Levi, A.
会议名称10th EUCARPIA Meeting on Genetics and Breeding of Cucurbitaceae
会议日期OCT 15-18, 2012
会议地点Antalya, TURKEY
英文摘要

There is a continuous need to enhance watermelon cultivars for disease and pest resistance. U.S. Plant Introductions (PIs) representing the different groups of watermelon (Citrullus spp.), including the desert watermelon Citrullus colocynthis (L.) Schrader (CC), the "cow" or Tsamma watermelon Citrullus lanatus subsp. lanatus var. lanatus [also known as C. lanatus (Thunb.) Matsum. et Nakai subsp. lanatus var. citroides (Bailey) Mansf. ex Greb.] (CLC), and Citrullus lanatus subsp. lanatus (CLL) are considered a useful source for enhancing disease or pest resistance in watermelon cultivars. However, the genetic relationships among these species and subspecies need further investigation. In this study, we examined genetic diversity among Citrullus spp. accessions representing CC, CLC, and CLL groups collected in their center of origin in Africa. High frequency oligonucleotides targeting active gene (HFO-TAG) primers were used in polymerase chain reaction (PCR) experiments to produce over 560 polymorphic markers among the Citrullus genotypes. Cluster and multidimensional scaling plot analysis produced distinct groups of CLC, CLL, and CC PIs. Several PIs that were designated as CLC or CLL were in transitional positions, indicating that they are the result of gene flow between the major Citrullus groups or subgroups. Population structure analysis indicated that CLC comprises two subgroups; each containing a set of unique alleles. Also, unique alleles exist in the CLL and the CC genotypes. The results here are consistent with our single nucleotide polymorphism (SNP) results developed in our recent genotyping-by-sequencing (GBS) study and our recent findings using fluorescence in situ hybridization (FISH) technology showing major differences in configuration of ribosomal DNA markers between the CLC and the CLL or CC genotypes. Overall, a wide genetic diversity exists among Citrullus spp. and different sources should be useful for enhancing disease or pest resistance in elite watermelon cultivars.


英文关键词Citrullus genotyping HFO-TAG SNP markers genome
来源出版物CUCURBITACEAE 2012: PROCEEDINGS OF THE XTH EUCARPIA MEETING ON GENETICS AND BREEDING OF CUCURBITACEAE
出版年2012
页码41-48
EISBN978-605-63297-0-8
出版者CUKUROVA UNIV, FAC AGRICULTURE
类型Proceedings Paper
语种英语
国家USA;Peoples R China;Israel
收录类别CPCI-S
WOS记录号WOS:000345687100002
WOS关键词LANATUS LANDRACES ; POWDERY MILDEW ; RACE 2 ; RESISTANCE ; MARKERS ; GERMPLASM
WOS类目Plant Sciences ; Horticulture
WOS研究方向Plant Sciences ; Agriculture
资源类型会议论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/300387
作者单位1.ARS, USDA, US Vegetable Lab, 2700 Savannah Highway, Charleston, SC 29414 USA;
2.West Virginia State Univ, Douglass Land grant Inst, Dept Biol, Institute, WV 25112 USA;
3.Boyce Thompson Inst Plant Res, Ithaca, NY 14853 USA;
4.Cornell Univ, Inst Genom Div, Ithaca, NY 14853 USA;
5.Natl Engn Res Ctr Vegetables, BAAFS, Beijing, Peoples R China;
6.Newe Yaar Res Ctr, Agr Res Org ARO, IL-30095 Ramat Yishai, Israel
推荐引用方式
GB/T 7714
Levi, A.,Thies, J. A.,Wechter, W. P.,et al. Exploiting genetic diversity in Citrullus spp. to enhance watermelon cultivars[C]:CUKUROVA UNIV, FAC AGRICULTURE,2012:41-48.
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