Genetics of grain filling rate and remobilization of stem reserves in bread wheat under terminal drought stress

Document Type : Research Paper

Authors

1 Department of Plant Breeding, Tabriz Branch, Islamic Azad University, Tabriz, Iran

2 2Department of Agronomy and Plant Breeding, Ardabil Branch, Islamic Azad University, Ardabil, Iran

3 Department of Agronomy, Tabriz Branch, Islamic Azad University, Tabriz, Iran

Abstract

To determine the gene action and inheritance of grain filling rate and remobilization of stem reserves in bread wheat, a 6×6 half diallel was performed. The F1 seeds along with parental varieties were evaluated under terminal drought stress at Islamic Azad University, Ardabil, Iran in 2018. Grain filling rate, effective grain filling period, remobilized dry matter, the contribution of remobilization in grain yield, remobilization efficiency of dry matter, carbohydrates remobilization efficiency, and specific weight of internodes were measured. Results showed the adequacy of the additive-dominance model in all of the characters except for the effective gain-filling period and contribution of remobilization in grain yield. The existence of partial dominance, complete dominance, and over-dominance was observed in control of the measured characters. Generally, broad sense heritability was high and ranged from 0.72 (carbohydrates remobilization efficiency) to 0.88 (grain filling rate). However, narrow sense heritability ranged from 0.17 (carbohydrates remobilization efficiency) to 0.66 (grain filling rate). Among the traits, grain filling rate had the highest narrow sense heritability (0.66) followed by the remobilized dry matter (0.46) and specific weight of internodes (0.44). There was also a positive relationship between dominance effects and the specific weight of internodes, where dominant alleles were favorable. Based on Griffing’s method, Rasad, Konya2002, and Pishtaz had higher general combining ability (GCA) and consequently favorable alleles for the grain filling rate. However, for remobilization, Rasad and Konya2002 had higher GCA.

Keywords


Baker RJ, 1978. Issues in diallel analysis. Crop Science 75: 533-536.
Blum A, 1998. Improving wheat grain filling under stress by stem reserve utilization. Euphytica 100(1): 77-83.
Blum A, 2011.  Plant Breeding for Water Limited Environments. Springer, New York.
Blum A, Golan G, Mayer J, and Sinmena B, 1997. The effect of dwarfing genes on sorghum grain filling from remobilized stem reserves under stress. Field Crops Research 52: 43-54.
Borrás L and Otegui ME, 2001. Maize kernel weight response to post flowering source-sink ratio. Crop Science 41: 1816-1822.
Borrás L, Slafer GA, and Otegui ME, 2004. Seed dry weight response to source-sink manipulations in wheat, maize and soybean: a quantitative reappraisal. Field Crops Research 86: 131-146.
Borrell A, Incoll LD, and Dalling MJ, 1993. The influence of the Rht1 and Rht2 alleles on the deposition and use of stem reserve in wheat. Annals of Botany 71(4): 317-326.
Ehdaie B, Alloush GA, Madore MA, and Waines JG, 2006. Genotypic variation for stem reserves and mobilization in wheat: I. Post-anthesis changes in internode dry matter. Crop Science 46(2): 735-746.
Ehdaie B and Waines JG, 1996. Genetic variation for contribution of pre anthesis assimilates to grain yield in spring wheat. Journal of Genetics and Breeding 50: 47-56.
Griffing B, 1956. Concept of general and specific combining ability in relation to diallel crossing systems. Australian Journal of Biological Sciences 9: 463-493.
Gupta AK, Kaur K, and Kaur N, 2011. Stem reserve mobilization and sink activity in wheat under drought conditions. American Journal of Plant Sciences 2: 70-77.
Hayman BI, 1954. The theory and analysis of diallel crosses. Genetics 39: 789-809.
Li M, Liu Y, Ma J, Zhang P, Wang C, Su J, and Yang D, 2020. Genetic dissection of stem WSC accumulation and remobilization in wheat (Triticum aestivum L.) under terminal drought stress. BMC Genetics 21: 50.
Mather K and Jinks JL, 1971. Biometrical Genetics. Chapman and Hall, London, UK.
Nazir MF, Sarfraz Z, Mangi N, Nawaz Shah MK, Mahmood T, Mahmood T, Iqbal MS, Rehmani MIA, El-Sharnouby M, Shabaan MKA, Sorour SGR, and Sabagh AE, 2021. Post-anthesis mobilization of stem assimilates in wheat under induced stress. Sustainability 13: 5940.
Piaskowski JL, Brown D, and Campbell KG, 2016. Near-infrared calibration of soluble stem carbohydrates for predicting drought tolerance in spring wheat. Agronomy Journal 108: 285-293.
Royo C, Abaza M, Blanco R, and Garcı´a del Moral LF, 2000. Triticale grain growth and morphometry as affected by drought stress, late sowing and simulated drought stress. Australian Journal of Plant Physiology 27: 1051-1059.
Shakiba M, Ehdaie B, and Madore MA, 1996. Contribution of internode reserves to grain yield in a tall and semidwarf spring wheat [Triticum aestivum]. Journal of Genetics and Breeding 50(1): 91-100.
Singh M and Singh RK, 1984. A comparison of different methods of half-diallel analysis. Theoretical and Applied Genetics 67: 323 -326.
Tatar Ö, Brück H, and Asch F, 2016. Photosynthesis and remobilization of dry matter in wheat as affected by progressive drought stress at stem elongation stage. Journal of Agronomy and Crop Sciences 202(4): 292-299.
Tuberosa R, 2012. Phenotyping for drought tolerance of crops in the genomics era. Frontiers in Physiology 19: 1-26
Valdés CV, Campuzano GE, López AD, Rueda CGM, and Morales-Rosales EJ, 2020. Variability in soluble carbohydrates of the stem and its contribution to grain yield in wheat. Revista Mexicana de Ciencias Agrícolas 10(3): 615-627.
Yang J, Zhang J, Wang Z, Zhu Q, and Liu L, 2001. Water deficit induced senescence and its relationship to the remobilization of pre-stored carbon in wheat during grain filling. Agronomy Journal 93(1): 196-206.