Open AccessHybridization between Fagopyrum (Polygonaceae) species native to China
Author(s) -
CHEN QINGFU
Publication year - 1999
Publication title -
botanical journal of the linnean society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.872
H-Index - 68
eISSN - 1095-8339
pISSN - 0024-4074
DOI - 10.1111/j.1095-8339.1999.tb01848.x
Subject(s) - fagopyrum , biology , polygonaceae , achene , botany , fagopyrum tataricum , intraspecific competition , pollen , interspecific competition , heterostyly , pollination , zoology , biochemistry , rutin , antioxidant
Thirty‐eight crosses between seven Fagopyrum species native to China were studied. Following normal pollination, there were very low inter‐group crossabilities (only 0 3%) between five species in the large‐achene group and two species (E gracilipes and E pleioramosum) in the small‐achene group, and high (15 50%) within the large‐achene group, i.e. E esculentum, E tataricum, E zuogongense, E pilus and E megaspartanium. Crosses between various types of (lowers (homostyle, heterostyle etc.) suggested that the intraspecific incompatibility also occurs in interspecific crosses. The hybrid seeds obtained from interspecific crosses all withered or shrivelled and lacked activity. Only one hybrid plant was obtained, tetraploid E esculentum x tetraploid E zuogongense. The hybrid displayed anomalous behaviour at meiosis, pollen grain sterility and withering of achenes, confirming the genetic differences between E esculentum and E zuogongense. The results support the hypothesis that E megaspartanium and E pilus are the possible ancestors of cultivated buckwheat