Open AccessAutopolyploids in fodder grass breeding: induction and field performance
Author(s) -
G. Dabkevičienė,
Vilma Kemešytė,
Gražina Statkevičiūtė,
N. Lemežienė,
Gintaras Brazauskas
Publication year - 2018
Publication title -
spanish journal of agricultural research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.337
H-Index - 36
eISSN - 2171-9292
pISSN - 1695-971X
DOI - 10.5424/sjar/2017154-11357
Subject(s) - biology , fodder , lolium perenne , agronomy , festuca pratensis , dry matter , polyploid , oryzalin , poa pratensis , ploidy , tiller (botany) , lolium multiflorum , botany , poaceae , microtubule , biochemistry , gene , microbiology and biotechnology
Doubling of chromosome set directly affects plant performance through increase of organ size, higher feeding value and increased resistance to adverse environmental factors. Therefore efficient methods of polyploid induction are needed in order to develop new varieties of naturally diploid fodder grass species. The efficiency of antimitotic agents as colchicine, amiprophos-methyl, trifluralin and oryzalin was compared in a series of tetraploid induction experiments in Lolium multiflorum, L. perenne and Festuca pratensis, while newly developed tetraploid plants were compared to standard tetraploid varieties in the field trials. Colchicine treatment proved to be the most efficient method for in vitro cultured embryos in comparison with the other agents. Induced tetraploids of F. pratensis produced higher dry matter and seed yield and could be used for the development of new varieties. Induced tetraploid plants of Lolium spp. were equal to the standard varieties in field trials, therefore they could be used as parental genotypes in crosses. Induced tetraploids of F. pratensis produced higher dry matter and seed yield and could be used for development of new variety.