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Cytogenetics of a new trispecies hybrid in cotton: [( Gossypium hirsutum L. × G. thurberi Tod.) 2 × G. longicalyx Hutch. & Lee]
Author(s) -
Konan O. N.,
D'Hont A.,
Baudoin J.P.,
Mergeai G.
Publication year - 2007
Publication title -
plant breeding
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.583
H-Index - 71
eISSN - 1439-0523
pISSN - 0179-9541
DOI - 10.1111/j.1439-0523.2007.01325.x
Subject(s) - introgression , biology , gossypium , genome , gossypium hirsutum , chromosome , malvaceae , botany , genetics , whole genome sequencing , gene
Abstract A three‐species hybrid named HTL including Gossypium hirsutum L. [2n = 4 x = 52, (AD) 1 genome] was created using the pseudophyletic introgression method with G. longicalyx Hutch. & Lee (2n = 2x = 26, F 1 genome) as donor parent and G. thurberi Tod. (2n = 2x = 26, D 1 genome) as bridge species. The new hybrid was totally self‐sterile and its interspecific status was confirmed using simple sequence repeat markers and cytogenetic analysis. Cytogenetic studies showed that its chromosome configuration was 2n = 52 = 14.13 I + 15.10 II + 1.03 III + 0.9 IV + 0.03 V + 0.13 VI (where I, II, III, IV, V and VI are univalents, bivalents, trivalents, tetravalents, pentavalents and hexavalents, respectively). Prospects for successfully exploiting the HTL hybrid in breeding programmes are discussed.