scholarly journals Ear Primordia Development and Stem Elongation of Near-isogenic Lines for Vernalization Requirement in Extremely-Early Maturing Wheat Cultivars (Triticum aestivum L.).

1995 ◽  
Vol 45 (1) ◽  
pp. 97-104 ◽  
Author(s):  
Masaya Fujita ◽  
Yoshinori Taniguchi ◽  
Kazuto Ujihara ◽  
Akihiro Sasaki
Keyword(s):  
Triticum Aestivum ◽  
Stem Elongation ◽  
Triticum Aestivum L ◽  
Vernalization Requirement ◽  
Near Isogenic Lines ◽  
Wheat Cultivars ◽  
Isogenic Lines ◽  
Early Maturing

Agronomic characteristics of hard red spring wheat (Triticum aestivum L.) near-isogenic lines differing at the Waxy (Wx) locus

2015 ◽  
Vol 95 (2) ◽  
pp. 201-204 ◽  
Author(s):  
Pierre Hucl ◽  
Adithya Ramachandran
Keyword(s):  
Triticum Aestivum ◽  
Spring Wheat ◽  
Triticum Aestivum L ◽  
Waxy Gene ◽  
Near Isogenic Lines ◽  
Hard Red Spring Wheat ◽  
Isogenic Lines ◽  
Agronomic Characteristics ◽  
Wx Locus ◽  
Wheat Lines

Hucl, P. and Ramachandran, A. 2015. Agronomic characteristics of hard red spring wheat (Triticum aestivum L.) near-isogenic lines differing at the Waxy (Wx) locus. Can. J. Plant Sci. 95: 201–204. Null mutations of the Waxy gene in all three genomes of hexaploid wheat (Triticum aestivum L.) produce a waxy starch phenotype. The agronomic performance of 32 waxy, partially waxy and wild-type near-isogenic spring wheat lines and four check cultivars was assessed at two locations over three cropping seasons. Differences in grain yield, kernel weight and test weight among allelic groups were generally small. The results of our study suggest that no significantly negative effects are likely to occur in the commercial cultivation of partially waxy wheat lines derived from a CWRS cultivar.

scholarly journals Effect Of Water Stress On Stomatal Characters Of Twenty One Near Isogenic Lines Of Wheat (Triticum Aestivum L.)

1970 ◽  
Vol 36 (1) ◽  
pp. 173-181
Author(s):  
AMS Alam ◽  
G Kabir ◽  
MM UD-Deen ◽  
E Hoque
Keyword(s):  
Triticum Aestivum ◽  
Water Stress ◽  
Flag Leaf ◽  
Triticum Aestivum L ◽  
Near Isogenic Lines ◽  
Stomatal Index ◽  
Abaxial Surface ◽  
Rainfed Condition ◽  
Isogenic Lines ◽  
Effect Of Water

The present study was carried out to determine the effect of water stress on stomatal characters of flag leaf of wheat (Triticum aestivum L.) where five different irrigation regimes were considered as environments. Stomatal opening frequencies were significantly decreased by water stress in both the surfaces of the flag leaf in both irrigated and rainfed conditions in all the near isogenic lines of wheat. In rainfed condition, it was lower than irrigated condition. Similarly stomatal index also significantly differed in different irrigation treatments at three different positions in both adaxial and abaxial surface but under rainfed condition, it was lower than the irrigated condition in all the genotypes. The pore lengths of flag leaf in both adaxial and abaxial surfaces were found similar in size. It also varied among the different irrigations, but the variations were not remarkable. In rainfed condition, the pore lengths of different genotypes showed lower values than irrigated condition. Effects of water stress on stomatal pore breadths in both the surfaces were significantly decreased in rainfed condition. But in different irrigation conditions, stomatal pore breadth were non-significant among the genotypes. The effect of water stress on different stomatal characters in both surface of leaf in different lines of wheat were decreased.   Keywords: Water stress; stomatal characters; wheat . DOI: http://dx.doi.org/10.3329/bjar.v36i1.9241 BJAR 2011; 36(1): 173-181

scholarly journals Identification of Candidate Genes for Root Traits Using Genotype–Phenotype Association Analysis of Near-Isogenic Lines in Hexaploid Wheat (Triticum aestivum L.)

2021 ◽  
Vol 22 (7) ◽  
pp. 3579
Author(s):  
Tanushree Halder ◽  
Hui Liu ◽  
Yinglong Chen ◽  
Guijun Yan ◽  
Kadambot H. M. Siddique
Keyword(s):  
Triticum Aestivum ◽  
Candidate Genes ◽  
Hexaploid Wheat ◽  
Root Traits ◽  
Triticum Aestivum L ◽  
Wheat Breeding ◽  
Near Isogenic Lines ◽  
Isogenic Lines ◽  
Genomic Regions ◽  
First Time

Global wheat (Triticum aestivum L.) production is constrained by different biotic and abiotic stresses, which are increasing with climate change. An improved root system is essential for adaptability and sustainable wheat production. In this study, 10 pairs of near-isogenic lines (NILs)—targeting four genomic regions (GRs) on chromosome arms 4BS, 4BL, 4AS, and 7AL of hexaploid wheat—were used to phenotype root traits in a semi-hydroponic system. Seven of the 10 NIL pairs significantly differed between their isolines for 11 root traits. The NIL pairs targeting qDSI.4B.1 GR varied the most, followed by the NIL pair targeting qDT.4A.1 and QHtscc.ksu-7A GRs. For pairs 5–7 targeting qDT.4A.1 GR, pair 6 significantly differed in the most root traits. Of the 4 NIL pairs targeting qDSI.4B.1 GR, pairs 2 and 4 significantly differed in 3 and 4 root traits, respectively. Pairs 9 and 10 targeting QHtscc.ksu-7A GR significantly differed in 1 and 4 root traits, respectively. Using the wheat 90K Illumina iSelect array, we identified 15 putative candidate genes associated with different root traits in the contrasting isolines, in which two UDP-glycosyltransferase (UGT)-encoding genes, TraesCS4A02G185300 and TraesCS4A02G442700, and a leucine-rich repeat receptor-like protein kinase (LRR-RLK)-encoding gene, TraesCS4A02G330900, also showed important functions for root trait control in other crops. This study characterized, for the first time, that these GRs control root traits in wheat, and identified candidate genes, although the candidate genes will need further confirmation and validation for marker-assisted wheat breeding.

Sign in / Sign up

Export Citation Format

Share Document