نتایج جستجو برای: seed formation

تعداد نتایج: 600619  

Journal: :چغندرقند 0
محمد علی چگینی استادیار موسسه تحقیقات اصلاح و تهیه بذر چغندرقند حجت الله خان محمدی دانشجوی کارشناسی ارشد دانشگاه آزاد اسلامی واحد رودهن- تهران شهرام خدادادی کارشناس ارشد مؤسسه تحقیقات چغندر قند- کرج

one of the most important goals of sugar beet cultivation is to achieve high seedling emergence and establishment under water deficit conditions. in this experiment irrigation of the seed bearing plants was cutoff in four periods of 750, 1000, 1250 and 1500 gdd after schtechlings were planted and the seeds were formed and grown under water stress. the experiment was carried out as a randomized ...

Journal: :Plant physiology 2014
Mingxun Chen Lijie Xuan Zhong Wang Longhua Zhou Zhilan Li Xue Du Essa Ali Guoping Zhang Lixi Jiang

Fatty acids (FAs) and FA-derived complex lipids play important roles in plant growth and vegetative development and are a class of prominent metabolites stored in mature seeds. The factors and regulatory networks that control FA accumulation in plant seeds remain largely unknown. The role of TRANSPARENT TESTA8 (TT8) in the regulation of flavonoid biosynthesis and the formation of seed coat colo...

2017
Olivier Coen Elisa Fiume Wenjia Xu Delphine De Vos Jing Lu Christine Pechoux Loïc Lepiniec Enrico Magnani

Angiosperm seed development is a paradigm of tissue cross-talk. Proper seed formation requires spatial and temporal coordination of the fertilization products - embryo and endosperm - and the surrounding seed coat maternal tissue. In early Arabidopsis seed development, all seed integuments were thought to respond homogenously to endosperm growth. Here, we show that the sub-epidermal integument ...

Journal: :Acta biochimica et biophysica Sinica 2013
Yong Tang Shutang Tan Hongwei Xue

Inositol 1,3,4-trisphosphate 5/6 kinase (ITPK) phosphorylates inositol 1,3,4-trisphosphate to form inositol 1,3,4,5-tetrakisphosphate and inositol 1,3,4,6-tetrakisphosphate which can be finally transferred to inositol hexaphosphate (IP₆) and play important roles during plant growth and development. There are 4 putative ITPK members in Arabidopsis. Expression pattern analysis showed that ITPK2 i...

2016
Duarte D Figueiredo Rita A Batista Pawel J Roszak Lars Hennig Claudia Köhler

In flowering plants, seed development is initiated by the fusion of the maternal egg and central cells with two paternal sperm cells, leading to the formation of embryo and endosperm, respectively. The fertilization products are surrounded by the maternally derived seed coat, whose development prior to fertilization is blocked by epigenetic regulators belonging to the Polycomb Group (PcG) prote...

Extended Abstract Introduction: Today, seed priming is widely used to improve seed germination in a wide range of plant species. As a result of seed pre-treatment, several molecular and biochemical changes occur, including increased macromolecule synthesis, enzyme activity and formation of different metabolites. Enzymatic and metabolic activities, synthesis of proteins in quantitative and qual...

Journal: :Journal of agricultural and food chemistry 2006
Chia-Pu Lee Gow-Chin Yen

The oil of tea seed (Camellia oleifera Abel.) is used extensively in China as cooking oil. The objectives of this study were to investigate the antioxidant activity of tea seed oil and its active compounds. Of the five solvent extracts, methanol extract of tea seed oil exhibited the highest yield and the strongest antioxidant activity as determined by DPPH scavenging activity and Trolox equival...

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