Mutability of <i>Medicago minima</i> (l.) bart. (fabaceae) seed mass in culture
The comparative analysis of mutability of a hundred seed mass (HSM) of small alfalfa - Medicago minima (L.) Bart. (Fabaceae) has been made for the first time on the seed material selected from different height (1100-1950 m height above sea level. m) samples of introduction plants in terms of Tsudakharskaya and Gunibskaya experimental bases of Mountain Botanical garden of Dagestan Scientific Center of RAS, of Inner Dagestan. The research was based on three factors - height above sea level, terms of collection of the crop and the mode of use of the ecosystem). It is shown that the considered three factors significantly, but with different degree of reliability, affect the variability of MSS of this juvenile-self-pollinator. It was found that the altitude difference equal to 850 m, significantly, at the highest level of reliability (99,9 %), has an impact on the variability of HSM and with increasing height above the sea level this sign increases. At the same time, the average indicators of this feature on the Student's t -distribution. also differ significantly, at the maximum level of significance. It is also noted that different terms of collection of crop (the difference between the dates of collection is 25 days), also significantly affect the variability of HSM, and the average of the latter significantly decreases with increasing terms of collection of material. It is shown that the regime of ecosystem use significantly, but to a relatively lesser extent (95,0 %) than the above-mentioned natural factors, has an impact on the variability of MSS and in the conditions of culture significantly decreases in MSS. The effectiveness of the reproductive effort of this youngster, expressed by the proportion of the mass of seeds in the fruit, with an increase in height above the sea level increases, and with increase in terms of collection of material-decreases.