Search Result of "M. M. PAYAK"

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ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : A Curvalaria leafDisease of Maize )

ผู้เขียน:ImgR. Kaur, ImgM.M. Payak, ImgRam nath

สื่อสิ่งพิมพ์:pdf

Abstract

A leaf disease of maize incited by Curvularia pallescens, is characterized by small, round, abundant lesions which may or may not be surrounded by pellucid area. C. pallescens is capable of inciting “ pellucid ring spot” on certain cultivars. Artificial field inoculations indicate that the inbred line CM 300 is resistant inasmuch as only flecks are produced in which the pathogen is not able to sporulate.

Article Info
Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 007, Issue 2, Dec 73 - Dec 73, Page 76 - 80 |  PDF |  Page 

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ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : MULTIPLE DISEASE RESISTANCE IN MAIZE)

ผู้เขียน:ImgR. C. SHARMA, ImgM. M. PAYAK, ImgB.K. MUKHERJEE, ImgJ. LILARAMANI

สื่อสิ่งพิมพ์:pdf

Abstract

In India maize (Zea mays L.) is subject to attack not only by downy mildew (DM) but also by leaf and sheath blights, stalk rots, rust, smuts and ear rots which altogether total about 35 individual diseases. Accordingly, in the All India Mazie Improvement Program consideration has to be given to eight to ten major diseases, including four DMs. Here the results of our work on the development of multiple disease resistant varicties out of Sclerospora induced DM resistant materials obtained through the courtesy of Dr. B.L. Renfro, Coordinator of the Inter-Asian Corn Program are presented. These, together with data on sorghum DM incidence from sick plots at Mysore, India, are listed in Table 1.

Article Info
Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 010, Issue 2, Jul 76 - Dec 76, Page 128 - 134 |  PDF |  Page 

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ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : GROUP DISCUSSION 1 Research Needs on the Pathologens )

ผู้เขียน:ImgCHARLES GARDNER SHAW, ImgRobert G. Kenneth, ImgM. M. PAYAK

สื่อสิ่งพิมพ์:pdf

Abstract

Shaw : I will lead off by discussing mating reaction – item 1. There is uncertainty as to where meiosis occurs in the life eyeles of Oomycetes. For years in fungi like the downy mildews (DMs) the nucleus in the oospore was considered diploid (2n) and meiosis was reported to occurduring oospore germination. However, Sansome (Chromosomes Today, V, i: 77-83. 1966) has hyoothesized that all the oomyeetes, including the DMs, may be diploid in their vegetative state. This would mean that meiosis does not occur in the first divisions of the oospore nucleus but occurs in the formation of gamete nuclei i.e. during the last two nuclear divisions in the antheridium and oogonium respectively. The genetic basis for pathogenicity is entirely different if we are dealing with diploid (2n) vegetative mycelium instead of haploid (1n) mycelium. We must clarify the chromosomal and nuclear content of the mycelium of DMs.

Article Info
Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 010, Issue 2, Jul 76 - Dec 76, Page 182 - 191 |  PDF |  Page