Projects / Programmes source: ARIS

Selection of english ryegras variety for grazing use (Lolium perenne L.)

Research activity

Code Science Field Subfield
4.03.01  Biotechnical sciences  Plant production  Agricultural plants 

Code Science Field
B390  Biomedical sciences  Phytotechny, horticulture, crop protection, phytopathology 
B225  Biomedical sciences  Plant genetics 
English ryegrass/ breeding/ yield/ growth phase
Evaluation (rules)
source: COBISS
Researchers (4)
no. Code Name and surname Research area Role Period No. of publicationsNo. of publications
1.  02936  PhD Jure Čop  Biotechnical sciences  Researcher  1998 - 1999  254 
2.  17790  Jože Godeša    Researcher  1998 - 1999  11 
3.  17791  Marjanca Jamnik    Researcher  1998 - 1999  17 
4.  00532  PhD Jože Korošec  Biotechnical sciences  Head  1998 - 1999  357 
In 1997 the field trial was set up in two locations, one at Ljubljana and the other at Vinjole, arranged in a randomised block design with four blocks. The aim of the study was to select a late flowering cultivar of English ryegrass which would stay in tillering phase for longer period. For this purpose we tested germ plasma material of four Slovene ecotypes with two cvs. Naki and Ilirka (control). In first harvest year the BS1 yielded 7.22 t herbage dry matter per hectare at four week cutting interval. During the same period the similar yield was obtained within BS3 while the other yields were statistically lower. At second cutting the sward of BS1 comprised 56% of shots in leaf phase and 3.5% of shots at the beginning of heading stage. Similar sward composition was found for control (average for both varieties: 57% of shots in leaf stage and 4.3% of shots at the beginning of heading stage). BS3 was early flowering type, its sward comprised 37% of shots in leafe phase and 18.3% of shots at the beginning of heading stage. The location influenced plant morphological development considerably during first three cuts. None of ecotypes reached flowering phase at Ljubljana while in average 9.5% of shots in the ecotype stands were at the beginning of flowering stage at Vinjole.
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