INITIAL ASSESSMENT OF 20 VARIETIES AND ECOTYPES OF ANNUAL RYEGRASS (LILIUM MULTIFLORUM) FOR FORAGE DRY MATTER YIELDS AND MORPHOLOGICAL TRATS UNDER SPACED PLANTS CONDITIONS

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HESAMZADEH HEJAZI S.M.; ABDI N.A.; SAEIDI M.

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Journal: Year:2003 | Volume:16 | Issue:2 (59 IN AGRONOMY AND HORTICULTURE) Page(s): 20-30

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Title

INITIAL ASSESSMENT OF 20 VARIETIES AND ECOTYPES OF ANNUAL RYEGRASS (LILIUM MULTIFLORUM) FOR FORAGE DRY MATTER YIELDS AND MORPHOLOGICAL TRATS UNDER SPACED PLANTS CONDITIONS

Author(s)

HESAMZADEH HEJAZI S.M. | ABDI N.A. | SAEIDI M. | Issue Writer Certificate

Keywords

ITALIAN (ANNUAL) RYEGRASS (LOLIUM MULTIFLORUM) PLOIDYQ4

FORAGE PRODUCTIONQ4

MORPHOLOGICAL TRAITSQ2

Abstract

In order to assessing of forage productivity and MORPHOLOGICAL TRAITS in annual ryegrass germplasm, an experiment was conducted at Alborz Research Center, Karaj, Iran. Seedlings of 20 genotypes (diploid and tetraploids) were transplanted in the field. Each row plot contains five spaced plants were established using a complete blocks design with three replications. Forage dry matter yield, basal cover, ear emergence date, pollination date, tiller number per plant, tiller height and persistency were assessed over five and two cuts for 2000 and 2001, respectively. The data were collected and analyzed for annual dry matter yield and annual average of MORPHOLOGICAL TRAITS for each year. The data were also analyzed as split plot in time over the two years. There were significant differences among genotypes for all of characters in each year. The results indicate the presence of useful genetic variation for Italian ryegrass germplasm. For ear emergence date, there was 11 days interval between the early and the late maturity genotypes. The accessions of 1216 (France) and 390 (Italy) had the earliest and the latest ear emergence date, respectively. For annual matter yield, accessions of 1254 (Australia), 1448 (USA) with an average of 11.5 tons/ha and 1216 (France) and LM-VI (Russia) with 6.5 tons/ha had the highest and the lowest FORAGE PRODUCTION per year, respectively. There were significant differences between cuts for all of traits in both year. Dry matter production was decreased over cuts in both years. The first cuts of each year had about 50 and 90 percent of total annual dry matter yield for 2000 and 2001 respectively. This trend was the same for plant heights and tiller number per plants. The accession 1765 (Netherlands) had a good seasonal distribution for forge production. In combined analysis over two years, the effect of genotypes, year and genotypes 'x year interaction effects were significant for all traits. The effects of ploidy level on FORAGE PRODUCTION and MORPHOLOGICAL TRAITS were also studied. Although tetraploids had higher production in some cuts but there were no significant differences between two ploidy levels for annual FORAGE PRODUCTION. The effect of ploidy level was only significant for persistency. Tetraploids were more persistence than diploids. The ploidy 'x year interaction effect was significant for tiller number and dry matter yield. In overall, the tetraploids produced higher dry matter yield and ratio of reproductive tillers in the second year.

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APA: Copy

HESAMZADEH HEJAZI, S.M., ABDI, N.A., & SAEIDI, M.. (2003). INITIAL ASSESSMENT OF 20 VARIETIES AND ECOTYPES OF ANNUAL RYEGRASS (LILIUM MULTIFLORUM) FOR FORAGE DRY MATTER YIELDS AND MORPHOLOGICAL TRATS UNDER SPACED PLANTS CONDITIONS. PAJOUHESH-VA-SAZANDEGI, 16(2 (59 IN AGRONOMY AND HORTICULTURE)), 20-30. SID. https://sid.ir/paper/19477/en

Vancouver: Copy

HESAMZADEH HEJAZI S.M., ABDI N.A., SAEIDI M.. INITIAL ASSESSMENT OF 20 VARIETIES AND ECOTYPES OF ANNUAL RYEGRASS (LILIUM MULTIFLORUM) FOR FORAGE DRY MATTER YIELDS AND MORPHOLOGICAL TRATS UNDER SPACED PLANTS CONDITIONS. PAJOUHESH-VA-SAZANDEGI[Internet]. 2003;16(2 (59 IN AGRONOMY AND HORTICULTURE)):20-30. Available from: https://sid.ir/paper/19477/en

IEEE: Copy

S.M. HESAMZADEH HEJAZI, N.A. ABDI, and M. SAEIDI, “INITIAL ASSESSMENT OF 20 VARIETIES AND ECOTYPES OF ANNUAL RYEGRASS (LILIUM MULTIFLORUM) FOR FORAGE DRY MATTER YIELDS AND MORPHOLOGICAL TRATS UNDER SPACED PLANTS CONDITIONS,” PAJOUHESH-VA-SAZANDEGI, vol. 16, no. 2 (59 IN AGRONOMY AND HORTICULTURE), pp. 20–30, 2003, [Online]. Available: https://sid.ir/paper/19477/en

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