Life Cycle and Phenological Growth Stages in Endangered Fritillaria raddeana Regel Using BBCH Scale in Its Natural Habitat, Northern Khorasan Province, Iran

Journal of Rangeland Science

مقاله 9، دوره 11، شماره 1، فروردین 2021، صفحه 103-120   

نوع مقاله: Research and Full Length Article

نویسندگان

Sajad Alipour¹؛ Ali Tehranifar^{* 2}؛ Mahmoud Shoor³؛ Leili Samiei⁴؛ Homayoun Farahmand⁵

¹Department of Horticultural Science and Landscape, College of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran

²Department of Horticultural Science and Landscape, Ferdowsi University of Mashhad, Mashhad, Iran

³Department of Horticultural Science and Landscape, College of Agriculture, Ferdowsi University of Mashhad. Iran

⁴Ferdowsi University of Mashhad

⁵Department of Horticultural Science, Faculty of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran

چکیده

Studying the phenology of valuable native plants which are on the verge of extinction, is very important and effective for better introduction and protection of them. Fritillaria raddeana is one of the native bulbous plants with ornamental and medicinal value in Iran. The aim of this study is to investigate the phenological stages of F. raddeana as a first step to protect it and later to introduce it. In a natural habitat, in northern Khorasan province, Iran, six zones were selected at a distance of 1000 m from each other, and five plants were selected and coded in each zone. To provide a standardized phenological description of the species, this study used the BBCH scale. In total, from sprouting to winter rest, six main principal stages were described for sprouting, leaf development, inflorescence emergence, flowering, fruit development, fruit maturity, senescence, and beginning of dormancy stages and within them, 15 secondary growth stages were described. Data were collected once a week in the course of the vegetative season and with a 30-day interval during the dormant season for two consecutive years (2015-2017). Additionally, we measured some traits of plant growth. During the first year, sprouting and subsequent leaf development began in late March and the inflorescence emerged in the middle of April. The full bloom occurred in the first half of May and then seed formation (in the late of May). The summer dormancy was triggered in late spring. During the second year of study (2016-2017), the results showed the growing stages start with a delay of 5-8 days compared with the previous year. In addition, the means of studied growth plant traits such as leaf number, plant height, flower stem length, flower number, and flower diameter were significantly higher in the first year than in the second one.

کلیدواژه‌ها

Climatic change؛ Dormancy؛ Extinction؛ Native bulbous plants؛ Principal growth stage

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