Variability of morphological parameters of seeds in varieties of carrots

Posted on 10.06.2020 by Саша Корнев
UDC 635.132:631.581.15.5
https://doi.org/10.25630/PAV.2020.12.89.003

Bukharov A.F., Baleev D.N., Mavrina P.O., Kornev A.V., Eremina N.A.

The prospects of family breeding by a complex of morphometric parameters are shown. The object of research was the seeds of four varieties of carrots. The seeds of individually selected plants of varieties Chantene 2461 (standard), Rogneda, Losinoostrovskaya 13, Argo were studied. Measurements were carried out using a caliper, DCM 300 MD microscope Micromed 1 video eyepiece at 40 magnification. Significant differences in the sizes of seeds, endosperm and embryo are shown both at the level of varietal populations and at the level of families selected from them. Families were identified that significantly exceeded the average value of the varietal population by 4.8–6.9% along the length of the seed, 5.4–6.3% along the length of the endosperm and 9.2–16.0% along the length of the embryo. The coefficient of variation within varietal populations varied from 8.1% to 12.8% along the length of the seed, from 9.9% to 11.4% along the length of the endosperm and from 12.2% to 16.1% along the length of the embryo a relatively low degree of variability of the studied parameters. However, the variability limits of the studied traits provide opportunities for effective breeding. A close correlation between the linear sizes of the seed and endosperm from 0.724 to 0.925 was revealed. The absence of rigid correlation between the linear dimensions of the embryo and endosperm provides ample opportunities for combinational selection. Most of the families (65%) belong to the third class with the IZ/E index value, and only individual families have overcome the 40% barrier in this indicator and can be attributed to the fourth class. The maximum value of the IE/E index was for the selected family No. 3 (0.43) from the Argo variety, family No1 (0.42) and No2 (0.41) from the Losinoostrovskaya 13 variety, family No2 (0.41) and No5 (0.41) from the Rogneda variety. The important role of the IE/E index (the ratio of the length of the embryo to the length of the endosperm) for assessing seeds by the degree of underdevelopment of the embryo and its use in selection is shown.

Key words: carrots, seeds, morphometric parameters, correlation, seed science, family selection

Bukharov A.F., Doctor Sci. (Agr.), chief research fellow of department of breeding and seed production, ARRIVG – a branch of FSBSI FSVG. E-mail: afb56@mail.ru

Baleev D.N., Cand. Sci. (Agr.), leading research fellow of laboratory of atomic molecular bioregulation and breeding, FSBSI ARSRIMAP. E-mail: dbaleev@gmail.com

Mavrina P.O., graduate student of the faculty of horticulture and landscape architecture, Russian State Agrarian University – Moscow Timiryazev Agricultural Academy named after K. A. Timiryazev

Kornev A.V., Cand. Sci. (Agr.), research fellow of department of breeding and seed production, ARRIVG – branch of FSBSI FSVG

Eremina N.A., junior research fellow of department of breeding and seed production, ARRIVG – branch of FSBSI FSVG

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For citing: Variability of morphological parameters of seeds in varieties of carrots. A.F. Bukharov, D.N. Baleev, P.O. Mavrina, A.V. Kornev, N.A. Eremina. Potato and Vegetables. 2020. No5. Pp. 32-36. https://doi.org/10.25630/PAV.2020.12.89.003 (In Russ.).

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