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8 risultati
Low molecular weight carbohydrates in pine nuts from Pinus pinea L.
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Low molecular weight carbohydrates in pine nuts from Pinus pinea L. (n = 7) have been studied by gas chromatography-mass spectrometry as their trimethylsilyl oximes. Besides previously reported components, such as glucose, fructose, sucrose, and raffinose, several soluble carbohydrates have been
Somatic embryogenesis in loblolly pine (Pinus taeda L.): improving culture initiation with abscisic acid and silver nitrate.
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Loblolly pine ( Pinus taeda L.) culture initiation was improved by the addition of abscisic acid (ABA) (3.7 micro M), silver nitrate (20 micro M), and guanosine 3',5'-cyclic monophosphate, 8-bromo-, sodium salt (10 micro M) to the medium and by raising cytokinin levels in the presence of 50 mg/l
Improving loblolly pine somatic embryo maturation: comparison of somatic and zygotic embryo morphology, germination, and gene expression.
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Clonal production of loblolly pine ( Pinus taeda L.) through somatic embryogenesis has the potential to meet the increasing industrial demands for high-quality uniform raw materials. A major barrier to the commercialization of this technology is the low quality of the resulting embryos. Twenty-five
Recovery of cryopreserved embryogenic cultures of maritime pine--effect of cryoprotectant and suspension density.
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Embryogenic cultures were obtained from seeds of open-pollinated maritime pine trees representing part of a breeding population. The aim of the present study was to develop and optimize a protocol for cryopreservation of Pinus pinaster somatic embryogenic tissue. The density of the embryogenic
Somatic Embryogenesis in Selected Conifer Trees Pinus nigra Arn. and Abies Hybrids.
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Somatic embryogenesis was achieved in the conifers Pinus nigra Arn. and in the hybrids Abies alba ×A. cephalonica and Abies alba ×A. numidica. For initiation of embryogenic tissue in P. nigra, immature zygotic embryos enclosed in megagametophytes were used.
Initiation of somatic embryogenesis from immature zygotic embryos of oocarpa pine (Pinus oocarpa Schiede ex Schlectendal).
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The focus of the current project was to establish somatic embryogenesis protocols for the tropical pine species Pinus oocarpa using immature zygotic embryos (ZEs) as explants. Somatic embryogenesis is best supported by mimicking natural seed-embryo developmental conditions, through a tissue culture
Brassinolide improves embryogenic tissue initiation in conifers and rice.
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Somatic embryogenesis (SE), the most promising technology for the large-scale production of high-value coniferous trees from advanced breeding and genetic engineering programs, is expected to play an important role in increasing productivity, sustainability, and the uniformity of future U.S.
Zygotic and somatic embryo morphogenesis in Pinus pinaster: comparative histological and histochemical study.
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We compared morphogenesis and accumulation of storage proteins and starch in Pinus pinaster Ait. zygotic embryos with those in somatic embryos grown with different carbohydrate sources. The maturation medium for somatic embryos included 80 microM abscisic acid (ABA), 9 g l(-1) gellam gum and either
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