INTRODUCED FORMS OF RED CLOVER (TRIFOLIUM PRATENSE L.) OF HAYFIELD-PASTURE DIRECTION OF THE USE ON NORTH CAUCASUS - Ecological Consequences of Increasing Crop Productivity - page 21

Productivity of green mass of wild clover samples Gornaya Saniba and Dargavski
is lower in comparison with introduced cultivars, but they have higher percentage of
seeds in infl orescences, which is an adaptive reaction to sharp variation of meteo-
climatic factors in the highlands.
Introduced cultivar SL-38 displayed itself as the most productive sample. Among
the cultivars of Belarusian selection, it has the largest seed number in infl orescences.

2.4 CONCLUSIONS
1. On the stage of stooling, the green mass of most clover samples has a good
quality. On the stages of budding and beginning of flowering (which are espe-
cially important for the evaluation of economic and biological traits), content
of dry matter, protein, ash, calcium, and sugar has an insignificant positive dy-
namics in all tested samples, while content of cellulose has increased signifi-
cantly. Dynamics of percentage content of fat, potassium, and calcium varied
among samples on different stages of plant development both in positive and
in negative direction.
2. The following samples are of greatest genetic value for further selection on
economic and biological traits: recommended for North Ossetia cultivar Dary-
al, introduced from Belarus cultivar SL-38, local wild samples Dargavski and
Gornaya Saniba.
3. Cultivar SL-38 has high adaptive capacity. Coincidence of reaction norm of
genotype of this cultivar with main ecological and climatic parameters of
introduction zone, which is the criterion of successful adaptation, allows its
successful introduction in conditions of North Ossetia—Alania and its use in
further selection for the creation of hayfield-pasture cultivars along with rec-
ommended cultivar Daryal and wild clovers Gornaya Saniba and Dargavski
(which have maximal adaptation to highland conditions).
4. Use of mentioned samples in further selection work permits to successfully
solve the problem of combination of high yield, seed productivity, nutrient
value, and environmental tolerance.

KEYWORDS

￿ Budding

￿ Ecological-geographical natural habitats

￿ Hayfield-pasture

￿ Inflorescence

￿ Introduction

￿ Red clover

￿ Seed number