Search Results

You are looking at 1 - 10 of 460 items for :

  • "chromosome" x
  • Biology and Life Sciences x
Clear All

A stock of disomic chromosome substitution (DCS) lines having specific chromosome of wheat variety C591 substituted in the background of rest of Chinese spring chromosomes, were used to analyze grain yield components as a function of enzyme activity of ADP–glucose pyrophosphorylase (AGPase), a starch biosynthesis enzyme in wheat grains. Associations between yield characteristics, grain growth rate (GGR) and AGPase enzyme activity of DCS lines suggested a major involvement of chromosome 3A, 4B, 7D and 2D in a temperature dependent manner. Assessment of AGPase assay at different developmental stages such as 14, 21, 28 days post anthesis (DPA) embodied that gene(s) for this enzyme are present on specific chromosomes and operate at different stages of grain development. The DCS line with 7D chromosome has a major contribution in determining the grain starch content. In this line, AGPase enzyme activity was highest at 21 DPA and was the most crucial determinant in its high GGR. Line 4B performed well at only early stage (14 DPA) suggesting that line 4B AGPase requires a lower temperature range for activation as compared to 7D line. Line 3A had substantially reduced (40%) test weights revealing the presence of few down-regulatory elements on chromosome 3A to reduce the activity of AGPase. The DCS line 2D showed higher test weights and grain number than all other lines ascribed to a consistent AGPase activity along with an efficient mechanism for translocation of photosynthates from source to sink. The chromosome 2D shows positive relation with yield attributes therefore, it can be employed to improve wheat productivity via analytical breeding programme.

Restricted access

Apolinarska B. 1996. Tetraploid rye with wheat genetic material. In: Plant Cytogenetics (Maluszynska J. ed.) Silesian Univ. Katowice: 206–209. Apolinarska B. 2003a. Chromosome pairing

Restricted access

. and Miller , J. S. ( 2010 ): Karyotypes and fluorescent chromosome banding patterns in Southern African Lycium (Solanaceae) . – Caryologia 63 ( 1 ): 50 – 61 . https://doi.org/10

Restricted access

Ben Amer, I. M., Worland, A. J., Börner, A., 1995. Chromosomal location of genes affecting tissue culture response in wheat. Plant Breeding 114: 84–85 Börner A

Restricted access

Raina, S. N. and Rees, H. (1983): DNA variation between and within chromosome complements of Vicia species. - Heredity 51 : 335-346. DNA variation between and within chromosome

Restricted access

Barry, E.G. 1967. Chromosome aberrations in Neurospora , and the correlation of chromosomes and linkage groups. Genetics 55 :21–32. Barry E

Restricted access
Acta Botanica Hungarica
Authors: M. Dudáš, P. Eliáš jun., D. R. Letz, Z. Bártová and V. Kolarčik

. Goldblatt , P. and Johnson , D. E. ( 2019 ): Index to plant chromosome numbers . – Missouri Botanical Garden , St. Louis . [online]. Website http://www.tropicos.org/Proiect/IPCN [accessed 12 February 2019

Restricted access

Chao, S., Sharp, P.J., Worland, A.J., Warham, E.J., Koebner, R.M.D., Gale, M.D. 1989. RFLP-based genetic maps of wheat homoeologous group 7 chromosomes. Theor. Appl. Genet. 78 :495–504. Gale M

Restricted access

Bir, S. S. and Verma, S. C. (2010): Chromosome atlas of the Indian pteridophytes (1951-2009) . — Bishen Singh Mahendra Pal Singh, Dehradun, India, 346 pp. Verma S. C

Restricted access

., Friebe, B. and Gill, B. S. (1996) Genome differentiation in Aegilops . 1. Distribution of highly repetitive DNA sequences on chromosomes of diploid species. Genome , 39 , 293–306. Gill B. S

Restricted access