FLORAL INITIATION AND SEED PRODUCTION IN <i>FESTUCA SCABRELLA</i> TORR.

Johnston, A.; MacDonald, M. D.

doi:10.4141/cjps67-100

Cited by 35 publications

(36 citation statements)

References 2 publications

(2 reference statements)

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“…These results contradict those of Bailey and Anderson (1978) who reported either no effect or a suppression of inflorescence production for 3 years after a spring burn. Precipitation during August and September of the latter study was below average, which may have suppressed floral initiation occurring in late summer (Johnston and MacDonald 1967).…”

Section: Discussionmentioning

confidence: 98%

The effects of burning on Festuca hallii in the parklands of central Alberta

Gerling¹,

Bailey²,

Willms³

1995

Can. J. Bot.

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Section: Discussionmentioning

confidence: 98%

The effects of burning on Festuca hallii in the parklands of central Alberta

Gerling¹,

Bailey²,

Willms³

1995

Can. J. Bot.

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“…While F. campestris is also tolerant of grazing and dry conditions (Willms et al, 1985), it is slower to establish, requiring at least 3e4 years for stand development. F. ovina sets seed in the first and every subsequent year, while F. campestris may not set seed for the first several years and then only every 5 to ten years (Johnston and MacDonald, 1967). The poor establishment of F. campestris may be related to its inability to compete with faster establishing F. ovina.…”

Section: Re-vegetation Effectsmentioning

confidence: 99%

“…Only pipelines constructed at least 7 years (and up to 40 years) prior were selected to allow for the establishment time of F. campestris, i.e., requiring up to 3e4 years to establish (Johnston and MacDonald, 1967). Approximately 25 pipeline ROWs in the study area met the seeding criteria, and of those only 14 met all the criteria.…”

Section: Study Areamentioning

confidence: 99%

Restoration of foothills rough fescue grassland following pipeline disturbance in southwestern Alberta

Desserud

Gates

Adams³

et al. 2010

Journal of Environmental Management

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“…Both E hallii and E campestris have been shown to be sensitive to defoliation, particularly during the growing season (Sinton 1980;Horton 1991;Willms 1991), and they are both erratic seed producers (Johnston and McDonald 1967).…”

Section: Introductionmentioning

confidence: 99%

Growth response ofFestuca altaica,Festuca hallii, andFestuca campestristo temperature

King¹,

Hill²,

Willms³

1995

Can. J. Bot.

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In Alberta, the rough fescue complex consists of Fesruca alraica Trin., Fesrlcca hallii (Vasey) Piper, and Fesruca carr~pesrris Rydb. The potential commercial value of these species for grazing, and their ecological significance, necessitates an increased understanding of their environmental adaptation. This study compared the growth response of the three species at five temperature regimes of 7: 3, 12:8, 17:13, 22: 18, and 27:23"C (1ight:dark; 18-h photoperiod). Seedlings were established and grew for 10 weeks at lS°C before being trimmed to a height of 3.5 cm and randomly assigned (36 pots of each species) to the growing environments. Growth was followed for 12 weeks. Temperature had a significant effect on most plant variables but the response differed among species. The optimal temperature for dry matter accumulation was 17: 13"C, and for tillering 12:s to 17:13"C. Fesriccu hnllii and E canzpesrris exhibited a faster tillering rate than E alraica, which had the heaviest tillers and highest leaf extension rate. The root to shoot ratio declined at temperatures above 17: 13°C. The significance of these observations to the geographical distribution of the species is discussed. Resume : En Alberta, le complexe des fCtuques rugeuses comporte le Fesruca altaica Trin., le Fesrucu hallii (Vasey) Piper, et le Fesruccl carnpesrris Rydb. La valeur commerciale potentielle de ces espkces pour le plturage, ainsi que leur signification Ccologique, nCcessitent une meilleure comprkhension de leur adaptation environnementale. Cette Ctude compare la croissance des trois espkces sous cinq rCgimes de tempCrature 7:3, 12:8, 17:13, 22:18, et 27:23'C (lumikre : obscuritC; photopCriode de 18 h). Les plantules ont Ct C Ctablies et ont poussC pendant 10 semaines B 18°C avant d'ktre ramenCes B une hauteur de 3,5 cm et distribuies au hasard (36 pots pour chaque espkce) sur l'espace de croissance. La croissance a Ct C suivie pendant 12 semaines. La tempCrature exerce un effet significatif sur la plupart des paramktres de croissance, mais les rCactions diffkrent selon les espkces. La tempCrature optimum pour I'accumulation de la matikre skche est de 17: 13"C, et pour le tallage de 12:s B 17: 13°C. Le E hallii et le E campesrris montrent un taux de tallage plus rapide que le E alraicrl, lequel posskde les talles les plus lourds et les taux d'extension foliaire en hauteur les plus grands. Le rapport racine B tige diminue aux temperatures supCrieures B 17: 13°C. Les auteurs discutent les implications de ces observations sur la distribution gkographique de ces espkces.

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FLORAL INITIATION AND SEED PRODUCTION IN FESTUCA SCABRELLA TORR.

Abstract: Three thousand seven hundred and eighry shoot ^apices of Fevuca scabrella Torr. were examined or-er a three-yea"r period. stages of dcvelopment and tr.ieht oi ,pii., ,no". the root-stcm-traniition were iecorded. lnitiation and

Cited by 35 publications

References 2 publications

The effects of burning on Festuca hallii in the parklands of central Alberta

The effects of burning on Festuca hallii in the parklands of central Alberta

Restoration of foothills rough fescue grassland following pipeline disturbance in southwestern Alberta

Growth response ofFestuca altaica,Festuca hallii, andFestuca campestristo temperature

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