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EMBRYOLOGICAL STUDIES ON CROSS-INCOMPATIBILITY BETWEEN 2x AND 4x IN BRASSICA
Evolutionary autoploidy in the sweet potato (Ipomoea batatas (L.) Lam.) and its progenitors
The hypothesis of the origin of the sweet potato was confirmed by comparative studies on some plant characters, sexual compatibility, and the behavior of artificial hexaploids produced from I. leucantha B genome.
Causal Relationships between the Polar Nuclei in Double Fertilization and Interspecific Cross-incompatibility in Avena
In double fertilization of angiosperms the triple fusion of two polar nuclei with a secondary male nucleus is apparently a biological isolation mechanism and may be the most effective barrier to hybridization on occasion.
Critical Discussion on Abortive Interspecific Crosses in Brassica
In most interspecific hybridization among diploid Brassica species, few or no hybrids are obtained, and the three crosses of tetraploid species are usually only partially successful, especially in one of the reciprocal crosses, explaining a cross-incompatibility complex.
Avoidance of high temperature sterility by flower opening in the early morning [of rice plant]
The genetics and cytology of certain cereals
- I. Nishiyama
The genetic results confirmed practically HUSKINS' observations that meiotic abnormalities occur independently of the phenotypic character of the grain, and appear to be not directly transmitted from generation to generation.
THE EFFECTS OF KINETIN AND INDOLEACETIC ACID ON CALLUS GROWTH AND ORGAN FORMATION IN TWO SPECIES OF NICOTIANA
Growth and callus formation were observed using pith tissues of Nicotiana tabacum “Bright Yellow” (2n=48) and N. alata (2n=18) which were cultured on a basal medium or basal medium plus IAA, kinetin,…
MEIOTIC CHROMOSOME PAIRING IN TWO INTERSPECIFIC HYBRIDS AND A CRITICISM OF THE EVOLUTIONARY RELATIONSHIP OF DIPLOID AVENA
Based on the available cytogenetic evidence the authors arranged all diploid oats in three groups with AsAs (or AA), TATA and CC genomes so that they might have a common ancestor and make progress in different trends of their unique specialization.
Triple fusion of the primary endosperm nucleus as a cause of interspecific cross-incompatibility in Avena
The triple fusion of two polar nuclei with a secondary male nucleus is apparently a sexual isolation mechanism, being a barrier to interspecific hybridization in Avena or probably angiosperms.