Search Result of "plant growth regulators"

About 51 results
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งานวิจัย

การวิเคราะห์ฮอร์โมนพืชในหัวกวาวเครือขาว (Pueraria mirifica) (2007)

หัวหน้าโครงการ:Imgนางสาวสมนึก พรมแดง

แหล่งทุน:ทุนอุดหนุนวิจัยมก.

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ผลงานตีพิมพ์ในวารสารวิชาการ

Synergistic effects of some plant growth regulators on in vitro shoot proliferation of korarima (Aframomum corrorima (Braun) Jansen)

ผู้แต่ง:ImgTefera, W, ImgDr.Surawit Wannakrairoj, Associate Professor,

วารสาร:

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ผลงานตีพิมพ์ในวารสารวิชาการ

Synthesis and preliminary evaluation of dimeric-28-homobrassinosteroids for plant growth regulators

ผู้แต่ง:ImgWaya S. Phutdhawong, ImgWanwikar Ruensamran, ImgDr.Weerachai Phutdhawong, Associate Professor,

วารสาร:

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ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Effects of Plant Growth Regulators and Explant Types on Callus Formation in African Yam Bean (Sphenostylis stenocarpa (Hochst. Ex A. Rich) Harms))

ผู้เขียน:ImgSikirat Remi Akande, ImgMorufat Oloruntoyin Balogun, ImgBenjamin Adefemi Ogunbodede

สื่อสิ่งพิมพ์:pdf

Abstract

This study was conducted to investigate the effect of explant types and plant growth regulator regimes on callus induction in African yam bean, with a view to developing protocols for regeneration. Leaf, stem and root explants of African yam bean were cultured in media containing different types and concentrations of plant growth regulators (PGR). The explants were observed for callus formation after three months. The main effects of variety, explant and plant growth regulator regimes and their interactions were highly significant. Highest callus formation was recorded in stem explant while the root explant had the lowest. The accession, SSSWN56 (brown seed) had higher percentage callus formation than SSSWN75 (grey seed). No callus was formed in hormone-free medium and the media containing indole acetic acid (IAA). One- hundred-percent callus formation was recorded for both accessions in the medium containing 1.5 mg/l each of kinetin and Naphthalene acetic acid (NAA). This medium is recommended for callus induction using stem explant and it will be useful in perfecting regeneration protocols for African yam bean.

Article Info
Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 043, Issue 3, Jul 09 - Sep 09, Page 442 - 448 |  PDF |  Page 

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ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Effects of Position and Plant Growth Regulators on Morphogenesis and Growth Rate of Coconut Endosperm In Vitro)

ผู้เขียน:ImgLazarus Agus Sukamto

สื่อสิ่งพิมพ์:pdf

Abstract

Endosperm position (antipodal and micropylar) and plant growth regulators were investigated for their effect on morphogenesis and the growth rate of coconut endosperm cultured in vitro. This experiment was conducted at the Tissue Culture Laboratory, Horticulture Department, University of Hawaii at Manoa, USA. Embryo companion and plant growth regulators were not necessary to induce callogenesis. Coconut endosperm explants started to form callus after 3 wk of culture. Callogenesis occurred in 98.83% of all treatments on 31 wk of culture. Endosperm positions and plant growth regulators did not affect signifi cantly the growth rate of the endosperm culture. The concentration of 2,4-dichlorophenoxyacetic acid (2,4-D) and 4-amino-3,5,6-trichloropicolinic acid (picloram) at 1 ? 10-3 M affected signifi cantly the growth rate after 9 wk of culture but did not inhibit thereafter. The growth rate of the control was the quickest on 31 wk of culture. Addition of 6-benzylaminopurine (BAP) did not affect signifi cantly the growth rate of the endosperm culture. The growth rate of tissues increased substantially but decreased on 31 wk of culture. Embryo-like structures appeared from antipodal position calli treated with 1 ? 10-6 M picloram. This study has provided the fi rst report of embryo-like structures occurring on coconut endosperm cultured in vitro.

Article Info
Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 045, Issue 6, Nov 11 - Dec 11, Page 977 - 984 |  PDF |  Page 

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