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Growth and Morphological Characteristics of Induced Autotetraploids of Lespedeza Cuneata, L. Stipulacea and L. Striata , and Interfertility of These Species at Diploid and Tetraploid Levels 1
Author(s) -
Brinkley R. M.,
Hanson C. H.,
Cope W. A.
Publication year - 1959
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1959.00021962005100030007x
Subject(s) - biology , ploidy , ovule , botany , endosperm , hybrid , heterosis , pollen , gene , biochemistry
Synopsis The induced autotetraploids had larger leaflets, stems, flowers, and seeds and lower yields of hay and seed than the respective parental diploids. Progenies from chasmogamous flowers gave higher yields than progenies from cleistogamous flowers, indicating heterosis. Viable hybrids were not obtained from any of the various combinations of diploid and tetraploid matings attempted. In ovaries of the diploid mating of L. Stipulacea × L. cuneata collapse of the ovule began at about the sixth day. The endosperm appeared degenerate.