A Cytological and Genetical Study of Triploid Maize.

Cytogenetics of Hybrids between Zea Mays and Euchlaena Mexicana.

NDOUBTEDLY specific and generic as well as lesser differences may U be largely attributed to differences in the chromosomes. Detailed analysis of gene and chromosome differences between related genera is seldom possible because of sterility and lack of genetical or cytological information. A striking exception is provided by Zea mays L. and Euchlaena mexicana Schrad. Between these distinct spec...

Effect of thermal stress on some hematological parameters of diploid and triploid Rainbow trout (Oncorhynchus mykiss)

Temperature fluctuation is one of the most common stressors during fish transportation and aquaculture condition. Triploid rainbow trout (Oncorhynchus mykiss) get more attention because of its sterility. In this study, 24 rainbow trout belong to diploid and triploid group, average weight 13±0.23 g were subjected to temperature change from 13 to 20 ºC, and kept under tension for 10 min. Before a...

A Correlation of Cytological and Genetical Cross- Ing-over in Zea May.9 by Harriet B. Creighton And

Chromosome Length in Relation to Transmission Frequency of Maize Trisomes.

RISOMIC inheritance was first reported in maize by MCCLINTOCK (1929) T in a study of segregating progenies derived from a spontaneous triploid (RANDOLPH and MCCLINTOCK 1926). Later MCCLINTOCK and HILL (1931) identified the primary trisome of chromosome IO, the shortest member of the maize chromosome complement which carries the r-g linkage group, and certain general observations on the known pr...

Chromosomes in Hybrids between Euchlaena Perennis and Zea

Hybrids between maize (Zea mays L.) and perennial teosinte (EuMaena perennis Hitchc.) offer a favorable opportunity to follow the behavior of triplicate sets of chromosomes in a triploid hybrid. Maize, the diploid parent, has been carefully analyzed both genetically and cytologically. Perennial teosinte seems to be unquestionably a true tetraploid. Its tetraploid character is evident from (1) t...