tailieunhanh - Effect of modes of application of 28 homobrassinolide on mung bean

An experiment was conducted to assess the response of mung bean (Vigna radiata L. Wilczek) to 28-homobrassinolide (HBL) supplied to the seeds ( µM) and/or to the foliage ( µM) of the plants. | Turk J Biol 32 (2008) 17-21 © TÜB‹TAK Effect of Modes of Application of 28-Homobrassinolide on Mung Bean Qazi FARIDUDDIN, Syed Aiman HASAN, Barket ALI, Shamsul HAYAT, Aqil AHMAD Plant Physiology Section, Department of Botany, Aligarh Muslim University, Aligarh 202002 - INDIA Received: Abstract: An experiment was conducted to assess the response of mung bean (Vigna radiata L. Wilczek) to 28-homobrassinolide (HBL) supplied to the seeds ( µM) and/or to the foliage ( µM) of the plants. Samples of the treated plant materials were assessed 30 and 50 days after sowing (DAS). It was observed that the activities of carbonic anhydrase (CA) and nitrate reductase (NR), leaf chlorophyll content (Chl), net photosynthetic rate (PN), stomatal conductance (gs), carboxylation efficiency (CE), dry mass (DM), pod number, and seed yield at harvest increased significantly over the control, irrespective of the mode of application. However, the plants raised by seed soaking also received foliar application of HBL generated maximum response. The order of response to HBL treatment was seed soaking + foliage application > foliage application only > seed soaking > control. Key Words: Brassinosteroids, carbonic anhydrase, nitrate reductase, stomatal conductance 28-Homobrassinolitin Mung Bean Üzerine Uygulama Dozlar›n›n Etkisi Özet: Mung bean bitkisinin (Vigna radiata L. Wilczek) tohum ve/ veya yapraklar›n 28-homobrassinolide (HBL) uygulamalar›na verdi¤i tepkiyi tayin etmek için bu çal›flma yap›lm›flt›r. Yüzeyi sterilize edilen tohumlar (i) µM HBL içinde 8 h bekletilmifl (ii), yapraklara 3 -1 µM HBL @ 5 cm bitki olacak flekilde uygulanm›fl (iii), tohumlar µM HBL de 8 h ve bitki kar›fl›m› µM HBL de 15 gün bekletilmifltir. Bu muamel edilmifl örnekler ekildikten 30 ve 50 gün (DAS) sonra karbonik anhidraz (CA) ve nitrat redüktaz (NR) aktiviteleri; lif klorofil muhtevas› (Chl); net fotosentetik oran (PN); stomatal kondaktans (gs); karboksilasyon verimlili¤i (CE); .

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