THE PHENOTYPIC FEATURES OF RED CLOVER (TRIFOLIUM PRATENSE L.) THAT CORRELATE WITH SEED PRODUCTIVITY
Abstract
To reduce the time of the selection process when creating varieties of red clover (Trifolium pratense L.) with a high seed yield, it is necessary to use the source material with the features that positively correlate with an increased seed productivity. It is estimated that in the Northern part of the Central Black Earth Economic region of the Russian Federation the seed productivity of red clover has a high correlation with the weight of the dried mass, a number of stems, inflorescences, seeds in the flowers, seed setability, inflorescence dissemination and a short сorolla tube. The average correlation coefficient was found between the seed yield productivity (1000 seeds), the length of the stem and the full visibility of the leaf pattern. A lesser degree positive correlation was found between seed productivity and a number of beans in the flower, two-seeded beans, a number of internodes, the length of time from the beginning of the spring regrowth and up to the anrhesis. The research has revealed the correlations between the seed productivity and economic, biological, and morphological characteristics of red clover in the Northern part of the Black Earth Economic region of the Russian Federation, and the North Caucasus region, in particular in the Oryol Oblast and North Ossetia-Alania, where this crop occupies a leading position among the cultivated perennial herbs. It is used In biological farming at the hayfields and pastures. It was found that the seed productivity of the red clover as an individual plant is largely determined by the capacity of its development – there was a high correlation between the seed yield and the dried mass of the plant (r = 0.72). The plants with the largest number of stems were characterized by the highest seed yield, which was inherent in both diploid and tetraploid cultivars (r = 0.61-0.79 and r = 0.55-0.83, respectively). The seed productivity of plants depended on the number of productive flowers on the plant (r = 0.57-0.78 for diploids and r = 0.76-0.89 for tetraploids) and their mass (r = 0.84). There is a lesser degree correlation between seed productivity and the number of beans in the flower (r = 0.12-0.18 for diploids and r = 0.04-0.16 for tetraploids). To a much greater extent, seed productivity depended on the number of seeds in the flowers (r = 0.79-0.81 for diploids and r = 0.63-0.86 for tetraploids). For the yield of tetraploid seeds, not only the total content of seeds in the flowers is important, but also the number of developed seeds (r = 0.84-0.89), since a significant part of the set seeds dies at various stages of ontogenesis and is removed during the sorting process. Seed productivity of red clover was largely determined by seed setability (r = 0.66-0.77 for diploids and r = 0.49-0.76 for tetraploids) and inflorescence dissemination (r = 0.71-0.80 for diploids and r = 0.70-0.75 for tetraploids). The seed productivity of red clover was associated with a mass of 1000 seeds. For diploid cultivars, this connection was mostly weak (r = 0.24-0.32), for tetraploids - average, which is due to larger seeds (r = 0.39-0.45). As for diploid cultivars, the presence of a weak correlation between seed productivity of the two-seeded beans (r = 0.09-0.18) and the number of stem internodes (r = 0.14) was found. The presence of an average correlation of the seed productivity with the full visibility of the leaf pattern (r = 0.30) was also noted.
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References
Poljudina R. I. Vnutripopuljacionnaja izmenchivost' i korreljacionnye svjazi klevera lugovogo v pitomnike polikrossa [Intra-population variability and the correlations of red clover in polycross breeding nursery] / R. I. Poljudina // Zadachi selekcii i puti ih reshenija v Sibiri [The selection process tasks and the ways of their solution in Siberia]. – Novosibirsk, 2000. – P. 127–134. [in Russian]
Bilis Ju. A. Korreljacionnye svjazi mezhdu nekotorymi hozjajstvenno-biologicheskimi priznakami diploidnyh i tetraploidnyh populjacij klevera lugovogo [Correlations between some economic and biological characteristics of diploid and tetraploid varieties of red clover] / Bilis Ju. A. // Tez. dokl. nauchn. konf. «Genetika i selekcija narodnomu hozjajstvu Litovskoj SSR» [Abstract Report of the Scientific Conference "Genetics and selection of the na-tional economy of the Lithuanian SSR"]. – Vilnius, 1981. – P. 66–67. [in Russian]
Halanz É. Fenotipusos tomegszelekcio magfermökepessedre a tetraploid vorcshereben / É. T. Halanz, T. Györi, S. Póezos // Növenyfermelés. – 1985. – Vol. 34. – № 5. – P. 337–344.
Taylor N. L. Registration of Freedom MR red clover / N. L. Taylor // Journal of Plant Registrations. – 2008. – P. 205–207
Novoselov M. Ju. Sovremennye metody v selekcii klevera lugovogo dlja kormoproizvodstva Rossii [Modern methods in selection of red clover for for-age production in Russia] / M. Ju.Novoselov, L. V.Drobysheva, G. P.Zjatchina et al. // Zemledelie [Agriculture]. – 2014 – №3. – P. 44–46. [in Russian]
Bekuzarova S. A. Selekcija klevera lugovogo [The selection process of red clover] / S. A. Bekuzarova. – Vladikavkaz : Izdatel'stvo Gorskogo GAU, 2006. – 176 p. [in Russian]
Drobec P.T. Jeffektivnost' otbora po razmeru semjadol'nyh list'ev v sele-kcii tetraploidnogo klevera lugovogo [The efficiency of selection process by the size of cotyledon leaves in selection of the tetraploid red clover] / P.T. Drobec // Selekcija i semenovodstvo [Selection process and seed production]. – 1985. – № 58. – P. 54–56. [in Russian]
Ljashhuk L.I. Korreljacionnaja svjaz' kolichestvennyh priznakov u klevera lugovogo [The correlation of quantitative traits in red clover] / Ljash-huk L.I. // Nauchnye metody povyshenija urozhajnosti i kachestva zernovyh i kormovyh kul'tur: Sbornik nauchnyh trudov [Scientific methods of increasing the yield and quality of grain and feed crops: a collection of research works]. – Mironovka, 1986. – P. 41–42. [in Russian]
Zar'janova Z.A. Korreljacionnaja zavisimost' mezhdu semennoj produk-tivnost'ju i hozjajstvenno - biologicheskimi priznakami klevera lugovogo [The correlation between seed productivity and economic and biological characteris-tics of red clover] / Zar'janova Z.A. // Tezisy dokladov Vsesojuznoj nauchnoj konferencii molodyh uchjonyh i aspirantov po aktual'nym problemam intensi-fikacii kormoproizvodstva (ijun' 1991 g., VNII kormov) [The reports theses of the All-Russian Union scientific conference of young scientists and postgradu-ates on topical issues of intensification of feed production (June 1991, The all-Russian Union Research Institute of Feedstuff)]. – M., 1991. – P. 67. [in Russian]
Kovalevskaja L.I. Izmenchivost' morfologicheskih i hozjajstvenno-cennyh priznakov u klevera lugovogo i ejo ispol'zovanie v selekcii [The varia-bility of morphological and economically valuable traits in red clover and its use in selection process] / L. I. Kovalevskaja, V. I. Bushueva // Vestnik Belorusskoj gos.s.h.akademii [Bulletin of the Belarusian State Agricultural Acad-emy]. –2016. – №3. – p. 74–78. [in Russian]
Zar'janova, Z.A. Izuchenie priznaka dvusemjannosti boba klevera lugovogo s cel'ju ispol'zovanija v selekcii na povyshennuju semennuju produk-tivnost' [The research of red clover's two-seeded bean to use in the selec-tion process for increased seed productivity] / Zar'janova Z. A., Borzova O. P., Ljahova A. S. // Jekologo–jekonomicheskie aspekty razvitija rasten-ievodstva v rynochnyh usloviijah (po materialam vyezdnogo zasedanija Prezid-iuma RASHN 16-17 ijulja 2002.) [Environmental and economic aspects of the development of crop production in market conditions (based on the materials of the Presidium meeting of the Russian Academy of Agricultural Sciences 16-17 July 2002)]. – Oryol, 2002. [in Russian]
Novosjolova A.S. Dvusemjannost' bobov – faktor uvelichenija semen-noj produktivnosti klevera lugovogo [Double-seeded beans as a factor of in-creased seed productivity of red clover] / A.S. Novosjolova, E.A. Kosicyna-Pinegina // Doklady VASHNIL [The reports of the all-Union Academy of Agri-cultural Sciences]. – 1982. – № 9. – P. 22–24. [in Russian]
Uzik M. Dvojsenennost strukov dateline luinej. Cast 11 / M. Uzik // Polnohospodarstvo. – ČSSR, 1979. – p. 392–399.
Metodicheskie ukazanija po provedeniju issledovanij v semenovodstve mnogoletnih trav [The guidelines for conducting research in seed breeding perennial herbs]. – M.: VNII kormov, 1986. – 135 p. [in Russian]
Metodicheskie ukazanija po selekcii i semenovodstvu klevera [The guidelines for selection and seed production of clover]. – M.: VNII kormov, 2002. – 71 p. [in Russian]
Metodicheskie ukazanija po pervichnomu i jelitnomu semenovodstvu novyh sortov klevera lugovogo (selekcii VNII kormov i TOS «Klever») [Methodological guidelines for the primary and elite seed production of new varieties of meadow clover (selection of All-Russian Research Institute of Feedstuff and TOS "Klever")]. – Russian State Agrarian University, Moscow Timiryazev Agricultural Academy, 2010. – 28 p. [in Russian]
Internet: Programma po staticheskoj obrabotke dannyh (korreljacionnye kojefficienty) – Microsoft office 2007 [Internet: program for static data processing (correlation coefficients) – Microsoft office 2007]. [in Russian]