Search Result of "Pimchai Apavatjrut"

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ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Analysis of Intersectional Hybrids of Dendrobium by RAPD Technique)

ผู้เขียน:ImgSirilak Inthawong, ImgWeenun Bundithya, ImgNuttha Kuanprasert, ImgPimchai Apavatjrut

สื่อสิ่งพิมพ์:pdf

Abstract

Thirty interspecific hybridizations of inter- or intra-section of Dendrobium were made. Five crosses showed good compatibility and could yield hybrids as follows: 2 intersectional hybridizations, 1) section Phalaenanthe: Den. phalaenopsis (D017) ? section Formosae: Den. draconis (D022) and 2) section Dendrobium: Den. finlayanum (D030) ? section Formosae: Den. cariniferum (D018); and 3 intrasectional hybridizations, 1) section Dendrobium: D030 ? Den. nobile (D031), 2) section Formosae: Den. trigonopus (D037) ? D022, and 3) D037 ? Den. infundibulum (D034). The greatest number of plantlets (1,250 plantlets) was obtained from cross D037 ? D022 whereas the least number (3 plantlets) was found in cross D037 ? D034. After transplanting for 6 months, survival rate of D037 ? D034 was 100% whereas no survival plant was found in cross D030 ? D018. Parents and hybrids of 5 crosses were analyzed by RAPD using 21 decamer primers and the number of primers generating polymorphic patterns of each cross varied. RAPD markers were able to differentiate parents in inter- and intra-sectional crosses and these markers could confirm the interspecific hybrids.

Article Info
Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 040, Issue 2, Apr 06 - Jun 06, Page 456 - 461 |  PDF |  Page 

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ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Effects of Nitrogen, Phosphorus and Potassium Deficiencies on Growth and Development of Globba rosae Gagnep.)

ผู้เขียน:ImgSoraya Ruamrungsri, ImgWatcharaphon Bumphenyoo, ImgRumjuan Sriwichai, ImgPimchai Apavatjrut

สื่อสิ่งพิมพ์:pdf

Abstract

The effects of N, P and K deficiencies on growth, development and nutrient status of Globba rosae were investigated using soilless culture. Rhizomes of Globba rosae Gagnep. were planted in sand medium. After emergence, plants were supplied with nitrogen (N), phosphorus (P) or potassium (K) deficient solutions, compared with a complete nutrient solution (control treatment) and nutrient-free solution (only tap water). Plants were sampled at flowering (7-8 weeks after planting, WAP) and before dormancy stages (12 WAP) to determine the nutrient contents of the aerial and underground parts. Nutrient deficiency symptoms were observed in -N, -P and -K treatments. Leaf of –N treatment was small and yellowish green, the pink bract was pale and had no floret. For P and K deficient symptoms, leaves were small, floral bracts were pale. Plant height, number of leaves per plant, number of plants per cluster, number of racemes per plant in nutrient deficiency treatments were reduced. Days to flower was retarded compared with control treatment. The optimum levels of nitrogen, phosphorus and potassium in nutrient solution for growth of Globba rosae were 100, 100 and 200 mg l-1, respectively.

Article Info
Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 041, Issue 1, Jan 00 - Mar 07, Page 72 - 83 |  PDF |  Page