A new species was synthesized artificially by chromosome doubling in a hybrid. The ensuing polyploid type exhibits an apomictic nature and maintains its morphological characteristics in the progeny. It showed a frequency of multiembryonic sacs of 29% in the ovules examined, whereas sacs were absent in the diploid type.

using haploid technique in breeding of sugar beet as an allogamous plant will facilitate breeding efforts. in this method,a pure line with a desirable genotype can be achieved by unfertilized ovule culture. therefore ovule culture was done from populations with numbers: 27621, 27624, 27626 and 27629. young flowering stems were collected and ovules were isolated from the flower buds after steril...

Abstract Aim Abiotic, biotic and dispersal factors interact to shape species distributions. At broad geographic extents, abiotic are thought exert the greatest influence on distribution, while strongly distribution regionally locally. We test whether reproductive traits relating explain differences between estimated potential occupied distributions for 21 of Trillium . Location Eastern North Am...