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POLLINATION AND BREEDING BEHAVIOUR IN THE TRIFOLIUM RUEPPELLIANUM COMPLEX IN KENYA
Author(s) -
BOGDAN A. V.
Publication year - 1966
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/j.1469-8137.1966.tb05965.x
Subject(s) - pollination , biology , botany , horticulture , pollen
S ummary The pollination and breeding behaviour of Trifolium baccarinii, T. mattirolianum and of four varieties of T. rueppellianum , all allied taxa constituting the T. rueppellianum complex, were studied at the National Agricultural Station, Kitale, Kenya. T. baccarinii and varieties minimiflorum and lanceolatum of T. rueppellianum have cleistogamous flowers which need no treatment for seed formation similar to var. preussii which, however, opens its flowers during the flowering. Var. rueppellianum does not form seed without tripping which, in the field, is done by bees. A recessive white‐flowering form was used for assessing the amount of natural cross‐pollination, which was found to be from under 1 % to 10%. Two unusual forms: erect and giant were also studied. T. mattirolianum sets seed only under eross‐pollination and T. rueppellianum may serve as a male parent. F 1 crosses of T. mattirolianum × T. rueppellianum form seed without cross‐pollination although tripping is necessary.