نتایج جستجو برای: تیس sorbus aucuparia l

تعداد نتایج: 618541  

ریزازدیادی گونه درختی کُندرشد تیس (Sorbus aucuparia) به ‌دلیل تجدید حیات جنگل در مناطق صخره‌ای بالابند کوهستانی و ارزش دارویی، صنعتی و زینتی آن از اهمیت بالایی برخوردار است. در معرض انقراض ‌بودن پایه‌های تیس در جنگل‌های شمال ایران، ریزازدیادی پایه‌های مسن این گونه را از طریق کشت جوانه ضروری نموده است. به‌طوری که برای دستیابی به روش مناسب ریزازدیادی از طریق کشت جوانه انتهایی و جوانه جانبی حاصل از...

2013
Bruno Aguiar Jorge Vieira Ana E. Cunha Nuno A. Fonseca David Reboiro-Jato Miguel Reboiro-Jato Florentino Fdez-Riverola Olivier Raspé Cristina P. Vieira

S-RNase-based gametophytic self-incompatibility evolved once before the split of the Asteridae and Rosidae. In Prunus (tribe Amygdaloideae of Rosaceae), the self-incompatibility S-pollen is a single F-box gene that presents the expected evolutionary signatures. In Malus and Pyrus (subtribe Pyrinae of Rosaceae), however, clusters of F-box genes (called SFBBs) have been described that are express...

2011
Ola M. Heide

Environmental regulation of growth and dormancy of four Sorbus genotypes was studied in controlled environments. Emphasis was placed on assessment of the presence and nature of the deficient photoperiodic dormancy regulation system that has previously been reported for some woody Rosaceae species. Two genotypes of Sorbus aucuparia L. maintained indeterminate growth for 8 weeks and 9 weeks at te...

Journal: :Food chemistry 2014
Felix Aladedunye Bertrand Matthäus

In the present study, phenolic extracts and fractions from Canadian rowanberry (Sorbus aucuparia) and crabapple (Malus baccata) were screened for antioxidant activity using DPPH radical scavenging activity, and β-carotene bleaching assays. Furthermore, rapeseed oil was supplemented with extracts/fractions and performance was assessed during accelerated storage at 65°C, under Rancimat at 120°C, ...

2013
Ulrike Oster Wolfhart Rüdiger

Extracts from ripe fruit and seeds of Sorbus aucuparia inhibit germination of other seeds, tested with Amaranthus caudatus and Lepidium sativum. The main compound of the “neutral fraction” of fruit extracts is the lactone compound parasorbic acid (4 —7 mg/g fresh weight) which inhibits germination at concentrations > 5x1C T 4 m. The “acid fraction” contains abscisic acid (1 .3—2.5 ^ / g fresh w...

Journal: :Silva Fennica 2023

The Finnish red list shows that the epiphytic lichen flora of forests is highly threatened and declining steeply. Red lists provide limited information on habitat associations species, which could be relevant in informing management conservation measures. We used documented empirical data expert assessments to determine for each red-listed (IUCN categories Near Threatened, NT; Vulnerable, VU; E...

2015

(a) Sorbose (L-sorbose, sorbinose) (C6H12O6, CAS Reg. No. 87–79–6) is an orthorhombic, bisphenoidal crystalline ketohexose. It was originally identifed in the juice of mature berries from the mountain ash (Sorbus aucuparia) where it occurs as the result of microbial oxidation of sorbitol. It also occurs naturally in other plants. Sorbose can be synthesized by the catalytic hydrogenation of gluc...

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