Phenotypic Analysis and Heritability of Seed Production Components in Red Clover (Trifolium pratense L.)

1 Agricultural Academy, Research Institute of Mountain Stockbreeding and Agriculture, BG-5600 Troyan
2 Agricultural Academy, Experimental Station on Soybean, BG-5200 Pavlikeni


Mihovsky, T. and G. Naydenova, 2018 . Phenotypic analysis and heritability of seed production components in red clover (Trifolium pratense L.). Bulg. J. Agric. Sci., 24 (1): 46–49

A comparative test of Bulgarian and Czech red clover varieties was carried out on elements, which determine the seed yield in order to evaluate the component composition of the variation and the inheritance of these indicators in relation to the high seed productivity selection. The study was conducted in the period 2013-2015 in RIMSA – Troyan, under the soil and climate conditions, representative for the foothill and mountain regions of Northern Bulgaria. The experience is set in four randomized repetitions, with size of the experimental plot of 5 m2, as it includes the varieties Nika 11 (2n), Sofi a 52 (2n), Respect (2n), Suez (2n), Vltavin (2n), Kvarta (4n) and Tempus (4n). The greatest genotypic diversity in the studied group of varieties was observed with respect to the number of fl ower heads per plant, the number of seeds per fl ower head and the absolute weight of the seeds. The diploid varieties, such as Nika 11 and Respect are characterized by the highest number of fl ower heads per plant. Sofi a 52 and Vltavin are characterized by the highest number of seeds per fl ower head. These varieties are included in our selection program for increasing the seed productivity of the species.

Key words: red clover; seed yield components

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