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A Study Of Resistance And Susceptibility Of Certain Plants To The Root Knot Nematode Heterodera Marioni Cornu Goodey
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Book Synopsis A Study of Resistance and Susceptibility of Certain Plants to the Root-knot Nematode Heterodera Marioni (Cornu) Goodey by : Morgan Golden
Download or read book A Study of Resistance and Susceptibility of Certain Plants to the Root-knot Nematode Heterodera Marioni (Cornu) Goodey written by Morgan Golden and published by . This book was released on 1951 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Studies of Northern Root-knot Nematode (Meloidogyne Hapla, Chitwood 1949) Biotypes and Some Factors Associated with Their Biology and Pathogenicity by : Rufus Omez Ogbuji
Download or read book Studies of Northern Root-knot Nematode (Meloidogyne Hapla, Chitwood 1949) Biotypes and Some Factors Associated with Their Biology and Pathogenicity written by Rufus Omez Ogbuji and published by . This book was released on 1971 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: Root-knot nematodes were among the earliest plant-parasitic nematodes to be recognized. Before 1949, they were considered as the one species Heterodera marioni (Cornu 1887) Goodey 1932. In 1949 Chitwood completed a taxonomic study of the root-knot nematodes and placed them in a separate genus Meloidogyne. Economically they are one of the most important group of nematode pests and their distitibution is cosmopolitan. As in many other parasitic organisms, biotypes or physiological races exist within various species of root-knot nematodes. Most frequently pathogenic characters on given hosts have been used in making distinctions of biotypes. Meloidogyne hapla, Chitwood 1949 is a root-knot nematode species found mainly in the temperate regions. It is widely distributed in the northwestern USA on numerous hosts, but it is also known that some populations of this nematode have different host preferences. In the biotype study, 14 of the 15 populations of M. hapla were collected from northwestern USA; one population came from eastern USA. These populations were exposed to various hosts in the greenhouse at temperatures averaging 73.4 F day and 62.6 F night. Five biotypes were established through pattern of infection on various hosts. The resistance expected of two graminaceous plants, corn and oat, was broken by two M. hapla biotypes. A test was made to cross males of M. haplabiotype Five (Quincy #1) and females from M. haplabiotype Three (Ontario). Larvae that hatched from eggs of this "bisexual union" did not show a physiological action different from larvae that hatched from eggs of the female parent alone. A few larvae from the "two parents" and from the female parent alone, penetrated roots of lettuce (Iceberg) but did not develop into egg laying females. It did not appear that root-knot nematode males altered the physiological character of the larvae. Tests were made to determine the influence of host age on resistance and susceptibility to M. hapla (biotype Five, Quincy #1). Results indicated that in a resistant alfalfa (65-298), newly germinated seedlings showed evidence of resistance to infection. This resistance increased with age in one-week and two-week seedlings. In susceptible alfalfa('Lahontan'), newly germinated seedlings, one-week and two-week seedlings were equally disposed to infection. Tests were made to determine the influence of pH ranges 4.7, 5.9 and 7.8 on resistance and susceptibility of plants inoculated with M. hapla (biotype Five, Dayton #1). All plants (resistant and susceptible alfalfa and susceptible Rutgers tomato) grew best in pH 7.8, good in pH 5.9 and poorly in pH 4.7. These pH ranges did produce marked differences in plant growth but did not affect their basic nematode resistance or susceptibility. Influence of pH on nematodes appeared to be indirect via the host plant in which the nematodes thrive.
Book Synopsis Plants Reported Resistant Or Tolerant to Root Knot Nematode Infestation by : Jocelyn Tyler
Download or read book Plants Reported Resistant Or Tolerant to Root Knot Nematode Infestation written by Jocelyn Tyler and published by . This book was released on 1941 with total page 738 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication is a compilation of reports on all plant species and varieties that have been called either resistant or tolerant to infestation by the root knot nematode, Heterodera marioni (Cornu) Goodey, (formerly called H. radicola (Greef) Mueller). The purpose is twofold: to bring together all available information on the subject in condensed form for the use of growers, plant breeders, and other investigators, and to establish a basis for the contribution of further data. It must not be assumed that all of the plants listed here are recommended as resistant. They intention is rather to present technical source material, not only useful to those who need practical information on particular plants but also suggestive to future workers.
Book Synopsis Plants Reported Resistant Or Tolerant to Root Knot Nematode Infestation by : Jocelyn Tyler
Download or read book Plants Reported Resistant Or Tolerant to Root Knot Nematode Infestation written by Jocelyn Tyler and published by . This book was released on 1941 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication is a compilation of reports on all plant species and varieties that have been called either resistant or tolerant to infestation by the root knot nematode, Heterodera marioni (Cornu) Goodey, (formerly called H. radicola (Greef) Mueller). The purpose is twofold: to bring together all available information on the subject in condensed form for the use of growers, plant breeders, and other investigators, and to establish a basis for the contribution of further data. It must not be assumed that all of the plants listed here are recommended as resistant. They intention is rather to present technical source material, not only useful to those who need practical information on particular plants but also suggestive to future workers.
Download or read book The Plant Disease Reporter written by and published by . This book was released on 1938 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Plant Disease Bulletin written by and published by . This book was released on 1938 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Susceptibility of Grape Rootstocks to Root Knot Nematode by : Elmer Snyder
Download or read book Susceptibility of Grape Rootstocks to Root Knot Nematode written by Elmer Snyder and published by . This book was released on 1936 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Plant Disease Reporter written by and published by . This book was released on 1938 with total page 698 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Circular written by and published by . This book was released on 1936 with total page 978 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Circular - United States Department of Agriculture by : United States. Department of Agriculture
Download or read book Circular - United States Department of Agriculture written by United States. Department of Agriculture and published by . This book was released on 1936 with total page 1052 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effective Extension Circular Letters by : Arthur Ryker Hall
Download or read book Effective Extension Circular Letters written by Arthur Ryker Hall and published by . This book was released on 1941 with total page 996 pages. Available in PDF, EPUB and Kindle. Book excerpt: An important feature of the dairy cattle show ring is the opportunity it affords for inspiring the dairyman to improve his stock, by holding up to him an ideal toward which to work.
Download or read book Miscellaneous Publication written by and published by . This book was released on 1941 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pamphlets on Parasitology written by and published by . This book was released on 1920 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Crop Cultivars Resistant to Root-knot Nematodes, Meloidogyne Species by : Joseph Neal Sasser
Download or read book Crop Cultivars Resistant to Root-knot Nematodes, Meloidogyne Species written by Joseph Neal Sasser and published by . This book was released on 1979 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Control of the Japanese Beetle and Its Grub in Home Yards by : Walter Ernest Fleming
Download or read book Control of the Japanese Beetle and Its Grub in Home Yards written by Walter Ernest Fleming and published by . This book was released on 1936 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Annual Report of the Hawaii Agricultural Experiment Station ... by : Hawaii Agricultural Experiment Station
Download or read book Annual Report of the Hawaii Agricultural Experiment Station ... written by Hawaii Agricultural Experiment Station and published by . This book was released on 1928 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the Helminthological Society of Washington by : Helminthological Society of Washington
Download or read book Proceedings of the Helminthological Society of Washington written by Helminthological Society of Washington and published by . This book was released on 1944 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt: