نتایج جستجو برای: rhubarb plant flower

تعداد نتایج: 410214  

Journal: :کشاورزی (منتشر نمی شود) 0
الهام احمدی استادیار، موسسه تحقیقات گیاهپزشکی کشور، تهران

lehmannia valentiana is one of the most important pests of ornamental plants, vegetables and other agricultural crops, which causes noticable damages. in a food experiment four kinds of food for 24 and 72 hours were offered. the preferences of food were amaranthus tricolor, cineraria grandiflora, pelargonium peltatum, rosa damascena and l. valentiana. the l. valentiaiia is active the whole year...

2016
Yuzhen Zhou Zongda Xu Kai Zhao Weiru Yang Tangren Cheng Jia Wang Qixiang Zhang

TCP proteins, belonging to a plant-specific transcription factors family, are known to have great functions in plant development, especially flower and leaf development. However, there is little information about this gene family in Prunus mume, which is widely cultivated in China as an ornamental and fruit tree. Here a genome-wide analysis of TCP genes was performed to explore their evolution ...

2011
Eileen F. Power Jane C. Stout

1. Pollination interactions comprise a network of connections between flowers and insect visitors. They are crucial for reproductive success in many angiosperms but are threatened by intensive agricultural practices. Although less intensive approaches, including organic farming, could improve farmland biodiversity, it is not clear whether or not these approaches enhance wild plant pollination a...

Journal: :journal of agricultural science and technology 2015
m. mianabadi m. hoshani s. salmanian

dorema aucheri boiss. (apiaceae) is an endemic plant growing in iran. this plant is used as food and its extracts are recommended for the treatment of a wide range of diseases. to conduct this study, leaf, stem, and flower of d. aucheri were collected from near yasouje, iran. antioxidant and antimicrobialeffects of methanol extracts were measured. further, total phenolic,flavonoid, anthocyanin,...

Journal: :بوم شناسی کشاورزی 0
علیرضا کوچکی الهام عزیزی آسیه سیاهمرگویی مریم جهانی کندری

in order to investigate the effects of soil texture and density on corm and flower yield of saffron (crocus sativus l.) an experiment was conducted as a factorial layout based on complete randomized block design with three replications at the faculty of agriculture, ferdowsi university of mashhad during two growing seasons of 2009-2010 and 2010-2011. treatment included 6 soil textures (clay loa...

Journal: :journal of ornamental plants 2014
seyyed gholamreza moosavi mohamad javad seghatoleslami mansour fazeli-rostampoor zeinolabedin jouyban

in order to study the effect of water deficit stress and different nitrogen levels on flower yield, yield components and water use efficiency of calendula officinalis l., an experiment was conducted as split plot based on randomized complete block design with three replications, at research field of islamic azad university, birjand branch in 2009. in this experiment, irrigation treatments (irri...

2016
Ricardo Ar Machado Mark McClure Maxime R Hervé Ian T Baldwin Matthias Erb

Endogenous jasmonates are important regulators of plant defenses. If and how they enable plants to maintain their reproductive output when facing community-level herbivory under natural conditions, however, remains unknown. We demonstrate that jasmonate-deficient Nicotiana attenuata plants suffer more damage by arthropod and vertebrate herbivores than jasmonate-producing plants in nature. Howev...

Journal: :علوم باغبانی 0
سمیه اسماعیلی وحید روحی بهروز شیران عبدالرحمان محمدخانی

the zinnia (zinnia elegans j.) flower has many applications in landscape design, whereas lack of adequate conditions and nutritions in some cases can reduce the quality and number of flowers. therefore, control of growth conditions is very important related to nutrition and application of growth regulators to improve the quality and quantity of flowers. flower's morphology and longevity are two...

2013
Ananth Kumar

The corrosion inhibitive action of flower extracts of Clitoria ternata flower on mild steel corrosion in 0.5 M H2SO4 solution was studied using weight loss method, potentiodynamic polarization and EIS measurements. The results obtained indicate that the extracts functioned as good inhibitors in 0.5 M H2SO4 solution. Inhibition efficiency was found to increase with extract concentration. The ads...

Journal: :Journal of experimental botany 2013
Richard M Amasino

Almost 100 years ago, the study of Maryland Mammoth tobacco by Garner and Allard was one in a long series of studies that have led to a better understanding of how plants "decide" when to flower. deciphering how plants "decide" when to flower. The extreme phenotype of Maryland Mammoth tobacco, in which a single recessive mutation changes a day-neutral to a strictly photoperiod-requiring plant, ...

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