CHINESE JOURNAL OF OIL CROP SCIENCES ›› 2022, Vol. 44 ›› Issue (3): 515-521.doi: 10.19802/j.issn.1007-9084.2021132

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Development and characterization of new interspecific hybrid between diploid wild species Arachis duranensis and A. ipaensis

Pei DU(), Qian WANG(), Hua LIU, Liu-yang FU, Li QIN, Jing XU, Zhong-xin ZHANG, Chen-yu LI, Wen-zhao DONG, Bing-yan HUANG, Xin-you ZHANG()   

  1. Henan Academy of Crops Molecular Breeding / Key Laboratory of Oil Crops in Huanghuaihai Plains, Ministry of Agriculture and Rural Affairs / Henan Provincial Key Laboratory for Oil Crops Improvement/National and Provincial Joint Engineering Laboratory for Peanut Genetic Improvement, Zhengzhou 450002, China
  • Received:2021-04-30 Online:2022-06-25 Published:2022-07-04
  • Contact: Xin-you ZHANG E-mail:dupei2005@163.com;wang453343550@126.com;haasz@126.com


Diploid wild species Arachis duranensis (AA) and A. ipaensis (BB) are the most possible ancestors of cultivated peanut. Peanuts synthesized by ancestral species are important materials for studying the origin and evolution. In this study, a new interspecific hybrid W1824 of A. duranensis (PI 497262) and A. ipaensis (PI 468322) was created and identified by hybridization, tissue culture, oligonucleotide probe staining FISH (OS FISH) and genomic in situ hybridization (GISH). Analysis of pollen fertility, meiosis behavior and phenotypic traits showed that W1824 had high sterility, its average chromosome configuration was 0.5 III + 3.5 II + 11.5 I, and its height of main stem, length of first primary branch and leaf area showed super-parent advantage. This indicated that the two accessions PI 497262 and PI 468322 had high cross-compatibility and suggested that the tetraploid peanut synthesized using the two accessions might have significantly higher biological yield than their parents and unstable inheritance in chromosomal level.

Key words: Arachis duranensis, a. ipaensis, interspecific hybrid, characterization, origin

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