Dry Matter Variability and Quality in Some Perspective Populations of some Agrostis Species

Important goals in forage grass breeding are improvement in forage yield and quality. The objective of this study was the examination of dry matter variability of autochtonous populations of three species from the genus Agrostis L. in order to choose the best ones for creating cultivars. Since we have not had domestic cultivars of these species so far, and it is known that they can be used for various purposes like cutting and grazing and having good quality, this research is made reasonable in many ways. The present results refer to the variability of genetic potentiality of the dry matter production in the year of usage. They refer to the basic parameters of quality on the chosen families originating from 14 populations of colonial bentgrass, Agrostis capillaris L., 22 populations creeping bentgrass, Agrostis stolonifera L. and 7 families originating from redtop, Agrostis gigantea Roth. With all the three species, the most productive family, with statistically significant higher yield, present the initial material for creating the first cultivars in our country

Inbreeding of Some Populations in the Genus Agrostis L.

This work presents some properties on produced inbred lines of the 5 best populations of 4 species of Agrostis for breeding purposes. The cultivars of forage grasses should meet a given aim for selection, which is the increasing dry matter and quality. The populations used in this research were the best ones for morphological and productive properties from a previous study. By the process of selfing there have been produced S1 offsprings which appeared to be quite superior in relation to open pollinated offspring from the mother plants. The obtained results were processed by multiple range regression analyses. According to the regression coefficient the inheritance of phenotype value of parental plants and the obtained offsprings after the selfing, and the properties like height of plant, tillering, number of vegetative and generative shoots, and dry matter yield for each plant has been determined. The selfed seed setting was quite satisfactory and it did not exppressed a very significant depression. Since the results relating to the inbred plants do not show inbreeding depression, process of selection and creating new cultivars should be continued for these species