Assessment of Tiller Inhibition (tin) Gene Molecular Marker for its Application in Marker-Assisted Breeding in Wheat

Kumar, Satish; Singh, Surendra; Mishra, C. N.; Saroha, Monika; Gupta, Vikas; Sharma, Prashant; Tiwari, Vinod; Sharma, Indu

doi:10.1007/s40009-015-0372-6

Cited by 4 publications

(3 citation statements)

References 19 publications

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“…Variability on similar pattern was also reported in wheat for different economically important traits (Bityutskii et al 2017, Cakmak et al 2004, Kumar et al 2015, Kumar et al 2019, Mishra et al 2020. The genetic variation for various traits, particularly yield and its components narrowed down after the advent of green revolution.…”

Section: Resultssupporting

confidence: 65%

Multivariate analysis in wheat germplasm captures variability for agro-morphological and physiological traits

et al. 2021

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The present study was carried out with an objective to investige genetic diversity in set of diverse wheat genotypes during 2018-19 at the experimental farm of Indian Institute of Wheat and Barley Research, Karnal. Principal Component Analysis was carried out on this set of 440 genotypes to study variability for different agro-morphological and physiological traits. The coefficient of variation ranged from 7.20-38.30 for the measured traits. Yield per plot was positively related with tillers per m, spike length, grains per spike and 1000 grains weight. The first three principal components explained 45.66% of variation. Agglomerative clustering grouped the genotypes into six groups and had a cophenetic correlation coefficient of 0.319. Almost all the components explained some variation for each trait and hence can be further used in hybridization for creation of variability in the breeding programs to develop improved cultivars. This remarkable variation in the set can be accounted to the fact that these lines were a collection of germplasm from different wheat growing countries and also their specificity for different traits.

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Section: Resultssupporting

confidence: 65%

Multivariate analysis in wheat germplasm captures variability for agro-morphological and physiological traits

et al. 2021

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“…Previous results showed that an increase in the grain number per spike was attributed to increased spike DM, fruiting efficiency, and reduced tiller population (Reynolds et al, 2012 ; Ittersum and Martin, 2016 ; Carolina et al, 2019 ). The introduction of tiller suppressor gene (tin) increased grain number per spike (Kumar et al, 2015 ), due to increased roots in deeper soil layers (Houshmandfar et al, 2020 ) and increased biomass partitioning to spike, which increased the fruiting efficiency, ultimately increasing the grain yield. This explanation is similar to previous results (Acreche et al, 2008 ; Lo Valvo et al, 2018 ).…”

Section: Discussionmentioning

confidence: 99%

Simultaneously genetic selection of wheat yield and grain protein quality in rice–wheat and soybean–wheat cropping systems through critical nitrogen efficiency-related traits

Chen

Wang²,

Chen³

et al. 2022

Front. Plant Sci.

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Analyzing the contribution of nitrogen (N) uptake and its utilization in grain yield and protein quality-related traits in rice-wheat (RW) and soybean-wheat (SW) cropping systems is essential for simultaneous improvements in the two target traits. A field experiment with nine wheat genotypes was conducted in 2018–19 and 2019–20 cropping years to investigate N uptake and utilization-related traits associated with high wheat yield and good protein quality. Results showed that N uptake efficiency (NUpE) in the RW cropping system and N utilization efficiency (NUtE) in the SW cropping system explained 77.6 and 65.2% of yield variation, respectively, due to the contribution of fertile spikes and grain number per spike to grain yield varied depending on soil water and N availability in the two rotation systems. Lower grain protein content in the RW cropping system in comparison to the SW cropping system was mainly related to lower individual N accumulation at maturity, resulting from higher fertile spikes, rather than N harvest index (NHI). However, NHI in the SW cropping system accounted for greater variation in grain protein content. Both gluten index and post-anthesis N uptake were mainly affected by genotype, and low gluten index caused by high post-anthesis N uptake may be related to the simultaneous increase in kernel weight. N remobilization process associated with gluten quality was driven by increased sink N demand resulting from high grain number per unit area in the RW cropping system; confinement of low sink N demand and source capability resulted in low grain number per spike and water deficit limiting photosynthesis of flag leaf in the SW cropping system. CY-25 obtained high yield and wet gluten content at the expense of gluten index in the two wheat cropping systems, due to low plant height and high post-anthesis N uptake and kernel weight. From these results, we concluded that plant height, kernel weight, and post-anthesis N uptake were the critically agronomic and NUE-related traits for simultaneous selection of grain yield and protein quality. Our research results provided useful guidelines for improving both grain yield and protein quality by identifying desirable N-efficient genotypes in the two rotation systems.

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“…The extinction, flowering and fruiting of wheat tillering are controlled by the additive effects of multiple genes and are susceptible to the influence of cultivation factors and the environment (Hu et al, 2018;Jin et al, 2019). The tiller inhibition (tin) gene is known to reduce the number of tillers in a wheat plant, which also leads to large spikes (Kumar et al, 2015). It has been shown that the presence of the tin gene and its likely role in modifying tiller number has slowed and deferred water use, while maintaining yield potential (grain number), and contributed to changes in seminal and branch root length to increase total root length and biomass (Hendriks et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Spike formation and seed setting of the main stem and tillers under post‐jointing drought in winter wheat

Lin

Shang

et al. 2020

J Agronomy Crop Science

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To clarify the influence of post-jointing drought on the ear-bearing and seed-setting characteristics of the main stem and tillers of winter wheat (Triticum aestivum L.), a pot experiment was conducted with cultivars "Shannong 29" (SN29) and "Heng 0628" (H0628), and five water regimes: mild drought (WR1) and severe drought (WR2) for 0-5 days after jointing, mild drought (WR3) and severe drought (WR4) for 0-10 days after jointing and adequate water supply as a control (CK). The present study focused on primary tillers (appear in the axils of main stem leaves: T1, T2, T3, T4, etc.), as well as on secondary tillers (appear from the bud in the axil of the prophyll: T10 and T20; appear in the axil of the first leaf of the primary tiller T1: T11). The yield components of tillers showed a downward trend with increasing tiller position and drought degree and duration, and the kernels per spike, single kernels weight and grain yield per spike of tillers T2, T3, T10 and T4 decreased more than those of the other tillers. These outcomes may be related to the spike developmental stages at the time of the drought period. Severe drought during the period from when the stamen primordium is first present (Waddington's stage 4) to when the carpel extends around the three sides of the ovule (Waddington's stage 5) significantly decreased the seed set of tillers, but short-term (5 days) mild drought during this period and even a short-term severe drought before Waddington's stage 4 had little effect on the seed set of tillers. The ear-bearing capacity of tillers was determined not only by the spike developmental stage, but also by the gap from the main stem and the competition of nutrition and space between tillers. Although the ear-bearing rate of tillers T3 and T10 decreased rapidly after the short-term mild drought, the increase in the ear-bearing rate of tillers T20 and T11 effectively compensated for the loss of the number of spikes per plant. Therefore, the short-term mild drought at the jointing stage had no significant effect on the grain yield of the two cultivars. The tillers T2, T3, T10 and T4 were sensitive to soil moisture in the jointing stage and had high plasticity. During this period, if timely irrigation improves soil moisture, it is expected to increase the earbearing rate and seed set of these tillers, thereby increasing grain yield.

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Assessment of Tiller Inhibition (tin) Gene Molecular Marker for its Application in Marker-Assisted Breeding in Wheat

Cited by 4 publications

References 19 publications

Multivariate analysis in wheat germplasm captures variability for agro-morphological and physiological traits

Multivariate analysis in wheat germplasm captures variability for agro-morphological and physiological traits

Simultaneously genetic selection of wheat yield and grain protein quality in rice–wheat and soybean–wheat cropping systems through critical nitrogen efficiency-related traits

Spike formation and seed setting of the main stem and tillers under post‐jointing drought in winter wheat

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