Heterochromatic chromosomal regions and protandry in maize

Authors
Pokhmel'nykh, GA Shumny, VK
Citation
Ga. Pokhmel'Nykh et Vk. Shumny, Heterochromatic chromosomal regions and protandry in maize, RUSS J GEN, 35(5), 1999, pp. 537-545
Citations number
27
Categorie Soggetti
Molecular Biology & Genetics
Journal title
RUSSIAN JOURNAL OF GENETICS
ISSN journal
10227954 → ACNP
Volume
35
Issue
5
Year of publication
1999
Pages
537 - 545
Database
ISI
SICI code
1022-7954(199905)35:5<537:HCRAPI>2.0.ZU;2-W
Abstract
A correlation between the polymorphism of heterochromatic knob regions (HKR ) of chromosomes and the protogyny-protandry mechanism in maize was demonst rated in Eastern Kazakhstan. The variation pattern of the protandry level i n variety population samples (cross-pollinated plants) and simple hybrids F -1 with significantly different HKR numbers and sizes in the chromosomes is considered. The functional significance of the maximum (10-15) and minimum (1-4) threshold values of HKR number and size is discussed.