Variation in concentrations of high-molecular-weight glutenin subunits and macropolymers in wheat grains of a recombinant inbred lines population and in two contrasting eco-sites in China

2012 ◽  
Vol 92 (10) ◽  
pp. 2188-2194 ◽  
Author(s):  
Xiangnan Li ◽  
Jian Cai ◽  
Fulai Liu ◽  
Yun Bo ◽  
Zengjun Qi ◽  
...  
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Recombinant Inbred ◽  
Recombinant Inbred Lines ◽  
Inbred Lines ◽  
Glutenin Subunits ◽  
Wheat Grains

Phosphorus affects high-molecular-weight glutenin subunits and glutenin macropolymer size distribution in wheat grains

2013 ◽  
Vol 152 (5) ◽  
pp. 759-769 ◽  
Author(s):  
Y. NI ◽  
D. YANG ◽  
Z. WANG ◽  
Y. YIN ◽  
T. CAI ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Size Distribution ◽  
High Molecular Weight ◽  
Application Rate ◽  
Utilization Efficiency ◽  
Glutenin Subunits ◽  
Particle Volume ◽  
Wheat Grains ◽  
P Application ◽  
Glutenin Macropolymer

SUMMARYTwo winter wheat (Triticum aestivum L.) cultivars, Jimai20 and Shannong12, differing in phosphorus (P) utilization efficiency, were selected to study the effect of P application rate on changes in glutenin macropolymer (GMP) size distribution and the content of high-molecular-weight glutenin subunits (HMW-GS) in wheat grain. Four P levels (0, 40, 100 and 160 kg/ha) were applied under N1 (112·5 kg/ha) and N2 (225 kg/ha) conditions in the field, in 2008/09 and 2009/10. The results showed that increased P levels favoured HMW-GS synthesis under N1 conditions, but had a less pronounced effect under N2. When compared with the control, the volume proportions of <10 μm GMP particles in grains of both cultivars were significantly decreased, and those of >100 μm were increased in response to P application. The volume proportions of 10–100 μm GMP particles in the cultivars Jimai20 and Shannong12 were respectively lower and higher in response to P application than with no P fertilizer. At maturity, for both cultivars, total HMW-GS content was negatively correlated with GMP particle volume of <10 μm, but positively correlated with that of >100 μm. These observations suggest that both P and N affect protein synthesis in wheat grains and there exists a relationship between HMW-GS content and the synthesis of large GMP particles (>100 μm). The N×P interaction was the most important factor to regulate the HMW-GS and GMP contents.

scholarly journals Effect of high-molecular-weight glutenin allele, Glu-B1d, from synthetic hexaploid wheat on wheat quality parameters and dry, white Chinese noodle-making quality

2010 ◽  
Vol 61 (4) ◽  
pp. 310 ◽  
Author(s):  
Yonglu Tang ◽  
Wuyun Yang ◽  
Yuanqi Wu ◽  
Chaosu Li ◽  
Jun Li ◽  
...  
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Bread Wheat ◽  
Hexaploid Wheat ◽  
Recombinant Inbred Lines ◽  
Quality Parameters ◽  
Synthetic Hexaploid Wheat ◽  
Wheat Quality ◽  
Glutenin Subunits ◽  
Synthetic Hexaploid

Synthetic hexaploid wheat (SHW) represents a valuable source of new resistances to a range of biotic and abiotic stresses. Exploitation of these resistances in bread wheat breeding programs, however, is not necessarily straightforward and requires an assessment of potential negative effects on quality particularly from the genomes contributed by the durum parents used in the development of SHW. In particular, high-molecular-weight glutenin subunits (HMW-GS) 6+8 that are common in durum and SHW but, in bread wheat, are present at only a very low frequency in Chinese wheat cultivars and landraces and as a result there is only limited data on the effects of HMW-GS 6+8 on wheat processing quality and especially on dry, white Chinese noodles (DWCN). In this study, 131 recombinant inbred lines (RIL) were developed from a cross between a CIMMYT SHW ‘Syn-CD780’ and an elite Sichuan common wheat cultivar ‘ChuanYu12’.The aim of this study was to investigate the effect of the HMW glutenin allele, Glu-B1d (6+8), from SHW on quality-related characteristics and DWCN making quality compared with the alternate allele Glu-B1u (7*+8). The RIL and parents were grown in three environments and analysed for 21 quality and noodle test parameters. Results showed the effect of Glu-B1d depended on both the parameters tested and glutenin subunit background contributed by alleles at the Glu-A1 and Glu-D1 loci. RIL with the Glu-B1d allele v. those with the Glu-B1u had significantly higher Zeleny sedimentation volume and falling number in the subunit backgrounds Glu-A1c/Glu-D1a and Glu-A1c/Glu-D1ah, significantly higher L* of dry flour in the background Glu-A1a/Glu-D1a; significantly higher dough development time, dough stability time, breakdown time and lower softness in both backgrounds Glu-A1c/Glu-D1a and Glu-A1c/Glu-D1ah; significantly higher values of most rapid visco analysis parameters, especially pronounced in the background Glu-A1c/Glu-D1a. The RIL with the Glu-B1d allele also showed significantly higher (P < 0.05) noodle total score (NTS) in the Glu-A1a/Glu-D1a background and significantly higher (P < 0.01) NTS and most components of sensory assessment in the Glu-A1c/Glu-D1a background. Overall, the results indicate that the allele Glu-B1d, 6+8, from synthetic hexaploids could, in general, have a positive influence on most bread wheat quality parameters and DWCN noodle-making, particularly when combined with particular glutenin subunits at Glu-A1 and Glu-D1.

Diverse sources of resistance to Spodoptera litura (F.) in groundnut

2019 ◽  
Vol 79 (01S) ◽  
Author(s):  
M. A. Saleem ◽  
G. K. Naidu ◽  
H. L. Nadaf ◽  
P. S. Tippannavar
Keyword(s):  
Recombinant Inbred ◽  
Spodoptera Litura ◽  
Hot Spot ◽  
Recombinant Inbred Lines ◽  
Insect Pest ◽  
Inbred Lines ◽  
Leaf Damage ◽  
Botanical Variety ◽  
Resistant Genotypes ◽  
Botanical Varieties

Spodoptera litura an important insect pest of groundnut causes yield loss up to 71% in India. Though many effective chemicals are available to control Spodoptera, host plant resistance is the most desirable, economic and eco-friendly strategy. In the present study, groundnut mini core (184), recombinant inbred lines (318) and elite genotypes (44) were studied for their reaction to Spodoptera litura under hot spot location at Dharwad. Heritable component of variation existed for resistance to Spodoptera in groundnut mini core, recombinant inbred lines and elite genotypes indicating scope for selection of Spodoptera resistant genotypes. Only 29 (15%) genotypes belonging to hypogaea, fastigiata and hirsuta botanical varieties under mini core set, 15 transgressive segregants belonging to fastigiata botanical variety among 318 recombinant inbred lines and three genotypes belonging to hypogaea and fastigiata botanical varieties under elite genotypes showed resistance to Spodoptera litura with less than 10% leaf damage. Negative correlation existed between resistance to Spodoptera and days to 50 per cent flowering indicating late maturing nature of resistant genotypes. Eight resistant genotypes (ICG 862, ICG 928, ICG 76, ICG 2777, ICG 5016, ICG 12276, ICG 4412 and ICG 9905) under hypogaea botanical variety also had significantly higher pod yield. These diverse genotypes could serve as potential donors for incorporation of Spodoptera resistance in groundnut.

scholarly journals QTL analysis of seed dormancy in Arabidopsis using recombinant inbred lines and MQM mapping

Heredity ◽  
1997 ◽  
Vol 79 (2) ◽  
pp. 190-200 ◽  
Author(s):  
Wybe van der Schaar ◽  
Carlos Alonso-Blanco ◽  
Karen M Léon-Kloosterziel ◽  
Ritsert C Jansen ◽  
Johan W van Ooijen ◽  
...  
Keyword(s):  
Seed Dormancy ◽  
Qtl Analysis ◽  
Recombinant Inbred ◽  
Recombinant Inbred Lines ◽  
Inbred Lines
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