Conjugacy of yield and its structural elements in spring soft wheat samples
https://doi.org/10.30766/2072-9081.2021.22.4.477-484
Abstract
The article presents an analysis of genotypic correlations between the yield of 33 variety samples of spring soft wheat and elements of its structure in the conditions of Penza region, the degree of variability of agronomic valuable traits during the years of research (2018-2020) has been determined. It has been established, that the low-varying agronomic valuable traits (CV = 7.8-9.9 %) include the wheat ear length, number of spikelets in the ear, weight of 1000 grains; moderately varying traits (СV = 13.8-15.6 %) include productive bushiness capacity, the number of grains in the ear and weight of grains in one ear; highly-varying traits (СV = 21.7-22.7 %) include the number of grains per ear and weight of the grain per ear. A strong positive interrelation has been established between the yield of spring soft wheat and the number of grains per ear (r = 0.706...0.816) and weight of grain per ear (r = 0.754...0.875). There has been revealed an average positive interrelation between the yield and the weight of ears (r = 0.467...0.621), the number of spikelets per ear (r = 0.358...0.582), the number of grains per plant (r = 0.446...0.541) and the weight of grain per plant (r = 0.309...0.608). The correlation dependence of yield on productive bushiness (r = 0.091…0.415), ear length (r = 0.074…0.503) and weight of 1000 grains (r = 0.193…0.583) turned out to be unstable. Thus, the formation of grain yield was influenced by the number of grains per ear and the weight of grain per ear. The analysis showed the degree of influence of various elements of productivity on the formation of yield of spring soft wheat variety samples that provides a more targeted selection in the breeding process.
Keywords
Triticum aestivum L.,
correlation relation,
yield,
the elements of the yield structure,
grain weight per ear,
coefficient of variation
Supporting agencies: The research was carried out under the support of the Ministry of Science and Higher Education of the Russian Federation within the state assignment of Federal Scientific Center for Bast Fiber Crops (theme No. 0477-2019-0020).
About the Author
Irina F. Demina
Federal Scientific Center for Bast Fiber Crops
Russian Federation
Russian Federation
Irina F. Demina, PhD in Agricultural science, senior researcher, the Laboratory of Selection Technologies, separate subdivision
1 «В», Michurin str., Lunino settlement, Penza region, 442731
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For citations:
Demina I.F. Conjugacy of yield and its structural elements in spring soft wheat samples. Agricultural Science Euro-North-East. 2021;22(4):477-484. (In Russ.) https://doi.org/10.30766/2072-9081.2021.22.4.477-484
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