Phaeoseptoria oryzae. [Descriptions of Fungi and Bacteria].

1980 ◽  
Author(s):  
E. Punithalingam
Keyword(s):  
Oryza Sativa ◽  
Geographical Distribution ◽  
Leaf Blade ◽  
Solomon Islands ◽  
Leaf Disease ◽  
Irregular Margin ◽  
Wet Weather ◽  
A Minor

Abstract A description is provided for Phaeoseptoria oryzae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOST: Oryza sativa. DISEASE: A minor leaf disease of Oryza sativa (rice). The macroscopic symptoms are variable and often not distinctive. Leaf lesions have an irregular margin, usually beginning from the edge of the leaf blade and are grey with red-purple borders. Spotting and pycnidia form on leaves and glumes. GEOGRAPHICAL DISTRIBUTION: Africa (Malawi, Zambia); Asia (China, Japan); Australasia & Oceania (Manus Island, Solomon Islands). TRANSMISSION: Presumably dispersed in the crop by splash-liberated conidia from infected leaves and glumes during wet weather.

Pyrenochaeta oryzae. [Descriptions of Fungi and Bacteria].

1980 ◽  
Author(s):  
Punithalingam. Punithalingam.
Keyword(s):  
Oryza Sativa ◽  
Sri Lanka ◽  
Sierra Leone ◽  
Geographical Distribution ◽  
Leaf Blade ◽  
Solomon Islands ◽  
Brown Spot ◽  
Infected Leaf ◽  
Nephotettix Virescens ◽  
Wet Weather

Abstract A description is provided for Pyrenochaeta oryzae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOST: Oryza sativa. DISEASE: Sheath blotch of rice or known in Japanese as 'Yosho-kappanbyo' meaning sheath brown spot (Hashioka, 1972). The macroscopic symptoms are large brown lesions on leaf sheaths. At first lesions start from the margin of a sheath as dark brown oblong blotches which enlarge, become bluish-grey, finally covering the entire sheath. Lesions may reach up to 10 cm in length and often appear at the junction of sheath and leaf blade just below the collar without causing the collar to break. When dry the affected part of the sheath turns greyish-brown with or without distinct brown margins. GEOGRAPHICAL DISTRIBUTION: Africa (Sierra Leone, Swaziland); Asia (Burma, China, India, Japan, Malaysia, Philippines, Sri Lanka, Thailand); Australasia & Oceania (Fiji, Solomon Islands). TRANSMISSION: Presumably dispersed in the crop by splash-liberated conidia from infected leaf sheaths and glumes during wet weather. Lesions on leaves also appear at the site of oviposition of the green hopper, Nephotettix bipunctatus[Nephotettix virescens] (Hashioka, 1972).

Rice grassy stunt tenuivirus. [Distribution map].

1997 ◽  
Author(s):  
Keyword(s):  
Oryza Sativa ◽  
Sri Lanka ◽  
Papua New Guinea ◽  
Geographical Distribution ◽  
Tamil Nadu ◽  
Solomon Islands ◽  
New Guinea ◽  
Distribution Map ◽  
Brunei Darussalam ◽  
New Distribution

Abstract A new distribution map is provided for Rice grassy stunt tenuivirus Viruses: Tenuivirus. Hosts: Rice (Oryza sativa). Information is given on the geographical distribution in ASIA, Bangladesh, Brunei, Darussalam, China, India, Kerala, Tamil Nadu, Indonesia, Java, Nusa, Tenggara, Sulawesi, Sumatra, Japan, Kyushu, Korea Republic, Malaysia, Philippines, Sri Lanka, Taiwan, Thailand, Vietnam, OCEANIA, Fiji, Papua New Guinea, Solomon Islands.

Phoma sorghina. [Descriptions of Fungi and Bacteria].

1985 ◽  
Author(s):  
E. Punithalingam
Keyword(s):  
Sierra Leone ◽  
Geographical Distribution ◽  
Leaf Spot ◽  
West Indies ◽  
Solomon Islands ◽  
Stem Canker ◽  
Crown Rot ◽  
Irian Jaya ◽  
Weed Hosts ◽  
A Minor

Abstract A description is provided for Phoma sorghina. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Gramineae and all kinds of plants. Also isolated from soil, air and various animal sources. DISEASE: A minor leaf spot of cereals and grasses. The visible symptoms vary considerably; on sorghum leaves spots are usually irregular or rounded, yellowish-brown or grey with definite reddish-purple margins or indefinite in outline, reaching 1 cm or more in width. Pycnidia develop within spots on leaves, glumes and seeds. Also the fungus has been implicated with pre- and post-emergence death of seedlings of Macroptilium and Sylosanthes species (54, 1779) crown rot of bananas (61, 3556), leaf spot of Agave americana and stem rot of Euphorbia tirucalli (63, 3383), brown stem canker of Leucosperum cordifolium (56, 253). GEOGRAPHICAL DISTRIBUTION: A ubiquitous fungus occurring in tropical and subtropical regions. Africa (Botswana, Cameroon, Egypt, Ethiopia, Gambia, Kenya, Malawi, Mauritius, Mozambique, Nigeria, Senegal, Sierra Leone, South Africa, Sudan, Tanzania, Togo, Uganda, Zaire, Zambia, Zimbabwe); Asia (Bangladesh, Brunei, Burma, China, Hong Kong, India, Indonesia (Irian Jaya), Laos, Malaysia, Nepal, Pakistan, Saudi Arabia, Sri Lanka, Taiwan, USSR); Australasia and Oceania (Australia, Hawaii, New Zealand, Papua New Guinea, Solomon Islands); Europe (Germany, Portugal, Italy, UK); North America (Canada, USA); Central America and West Indies (Antigua, Guatemala, Honduras, Jamaica, Nicaragua, Puerto Rico, Trinidad); South America (Argentina, Bolivia, Brazil, Colombia). TRANSMISSION: Probably by contaminated seed; the fungus has been found on or isolated from several seed samples (1, 289; 33, 599; 47, 2153; 54, 1779; 60, 367; 61, 4102). In Taiwan P. sorghina has been found to be transmitted from seed to seedlings (62, 4281). The fungus has also been claimed to persist on trash and weed hosts and remain viable up to 1 yr but lose its viability after 2 yr storage on dry infected leaves (Koch & Rumbold, 1921).

Puccinia schedonnardi. [Descriptions of Fungi and Bacteria].

1971 ◽  
Author(s):  
J. L. Mulder
Keyword(s):  
Geographical Distribution ◽  
Leaf Disease ◽  
Pacific Slope ◽  
A Minor

Abstract A description is provided for Puccinia schedonnardi. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Aecial stage on species of Abutilon, Callirhoe, Hibiscus, Gossypium and on a few other genera of Malvaceae. Uredial and telial stages on species of Limnodea, Melica, Monanthochloe, Muhlenbergia, Schedonnardus and Triplasis. DISEASE: A minor leaf disease of cotton, infection also occurring on the bolls and involucral bracts. GEOGRAPHICAL DISTRIBUTION: Fairly general in USA (more abundant southwards) but absent from the N. Pacific slope. On cotton it occurs in Ariz., lower California, N. Mex., Okla and Texas (14: 628) and also in Mexico. Telial and aecial states are reported from Argentina (25: 234) and the former also from Canada (Manitoba) and S. Africa. TRANSMISSION: No studies reported.

Pestalotiopsis palmarum. [Descriptions of Fungi and Bacteria].

1971 ◽  
Author(s):  
J. E. M. Mordue
Keyword(s):  
Geographical Distribution ◽  
New Caledonia ◽  
Elaeis Guineensis ◽  
Solomon Islands ◽  
Cocos Nucifera ◽  
Phoenix Dactylifera ◽  
Cayman Islands ◽  
Areca Catechu ◽  
New Hebrides ◽  
A Minor

Abstract A description is provided for Pestalotiopsis palmarum. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Palmae, including Borassus flabellifer, Chamaerops humulis, Capsicum, Cocos nucifera, Elaeis guineensis, Phoenix dactylifera, P. canariensis, Areca catechu, Arenga, Caryota, Howea, Manilkara hexandra, Musa, Roystonia, Diospyros, Eichhornia, Flacourtia, Pimenta, Pinus, rubber, tea. DISEASE: A minor leaf spot probably restricted to the Palmae and reported as causing disease in Areca catechu, Borassus flabellifer, Cocos nucifera, Chamaerops humulis and Elaeis guineensis. Small yellow-brown spots, becoming whitish to grey with a dark brown border, oval, more than 1 cm long and elongating parallel to the veins, sometimes coalescing, with the dark acervuli on the upper surface within the central part. GEOGRAPHICAL DISTRIBUTION: Andaman Islands, Australia, Bermuda, Brazil, Cayman Islands, Ceylon, Congo Republic, Colombia, Cuba, Diego Garcia, Dominican Republic, El Salvador, Fiji, Ghana, Gilbert and Ellice Islands, Guinea, Guyana, Honduras, Hong Kong, Haiti, India, Indonesia, Italy, Ivory Coast, Jamaica, Kenya, Laos, Malagasy Republic, Malaysia, Mauritius, Mozambique, Morocco, New Caledonia, New Hebrides, Nigeria, Pakistan, Panama, Papua-New Guinea, Philippines, Puerto Rico, Senegal, Seychelles, South Africa, Surinam, Solomon Islands, Samoa, Sierra Leone, Tanzania, Togo, Trinidad and Tobago, Thailand, Uganda, USA (California, Florida), Vietnam, Yugoslavia, Zambia. TRANSMISSION: No detailed studies reported.

Preliminary Studies on Thickness of Nondestructive Rice (Oryza sativa L.) Leaf Blade

2007 ◽  
Vol 6 (7) ◽  
pp. 802-807 ◽  
Author(s):  
You-ding CHEN ◽  
Xu ZHANG ◽  
Xin-qiao ZHOU ◽  
Guan-hua CHEN
Keyword(s):  
Oryza Sativa ◽  
Leaf Blade ◽  
Oryza Sativa L

Cochliobolus pallescens. [Descriptions of Fungi and Bacteria].

1990 ◽  
Author(s):  
A. Sivanesan
Keyword(s):  
Hong Kong ◽  
Sierra Leone ◽  
Papua New Guinea ◽  
Geographical Distribution ◽  
Leaf Spot ◽  
Solomon Islands ◽  
Ear Rot ◽  
Black Point ◽  
Leaf Spots ◽  
Windward Islands

Abstract A description is provided for Cochliobolus pallescens. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Common on many graminicolous and non-graminicolous hosts. Important cereals and grasses include Eleusine, Hordeum, Oryza, Panicum, Paspalum, Pennisetum, Poa, Saccharum, Setaria, Sorghum, Triticum and Zea economically important dicot hosts include Allium (59, 4867), Arachis (53, 1647), Brassica (66, 3075), Canna, Calendula, Calotropis (44, 1832; 66, 3587), Carica (61, 5129), Cinnamomum, Citrus (68, 843), Coriandrum, Dahlia, Fagopyrum (64, 2425), Gaillardia, Hevea (56, 1257; 67, 5560), Musa (54, 4051), Solanum (50, 3484). DISEASE: Leaf spots of cereals, black point of wheat (44, 102), leaf spot and on stems of rubber (56, 1257; 67, 5560), ear rot of barley (62, 1005), rot of garlic (59, 4867). GEOGRAPHICAL DISTRIBUTION: Australia, Bangladesh, Brunei, Burma, Canada, Colombia, Cuba, Denmark, Egypt, Ethiopia, Fiji, Ghana, Guinea, Hong Kong, India, Indonesia, Iran, Jamaica, Japan, Kenya, Malaysia, Malawi, Nepal, Nigeria, Pakistan, Papua New Guinea, Peru, Philippines, Sierra Leone, Singapore, Solomon Islands, Somalia, Sri Lanka, Swaziland, Sudan, Taiwan, Tanzania, Thailand, Trinidad, USA, USSR, Venezuela, Windward Islands, Zambia, Zimbabwe. TRANSMISSION: By wind-borne conidia and seed-borne.

Phomopsis elaeidis. [Distribution map].

1995 ◽  
Author(s):  
Keyword(s):  
South America ◽  
Central America ◽  
Geographical Distribution ◽  
Oil Palm ◽  
Elaeis Guineensis ◽  
Solomon Islands ◽  
Distribution Map ◽  
New Distribution

Abstract A new distribution map is provided for Phomopsis elaeidis Punith. Hosts: oil palm (Elaeis guineensis). Information is given on the geographical distribution in AFRICA, Guinea, Nigeria, Tanzania, Zaire, ASIA, Malaysia, E. Malaysia, India, AUSTRALASIA & OCEANIA, Australia, NT, Solomon Islands, CENTRAL AMERICA, Dominica, SOUTH AMERICA, Ecuador.

Dysdercus sidae. [Distribution map].

1970 ◽  
Author(s):  
Keyword(s):  
Geographical Distribution ◽  
Host Plants ◽  
Pacific Islands ◽  
New Caledonia ◽  
Solomon Islands ◽  
New Guinea ◽  
Distribution Map ◽  
Irian Jaya ◽  
New Hebrides ◽  
New Distribution

Abstract A new distribution map is provided for Dysdercus sidae Montr. (D. insular is Stål) (Hemipt., Pyrrhocoridae). Host Plants: Cotton, kapok, Hibiscus spp. Information is given on the geographical distribution in AUSTRALASIA AND PACIFIC ISLANDS, Australia, Fiji, Loyalty Islands, New Caledonia, New Hebrides, Niue, Papua & New Guinea, Samoa, Solomon Islands, Tonga, Wallis Islands, Irian Jaya.

Ascochyta desmazieresii. [Descriptions of Fungi and Bacteria].

1980 ◽  
Author(s):  
E. Punithalingam
Keyword(s):  
Geographical Distribution ◽  
Leaf Spot ◽  
Crop Residues ◽  
Lolium Multiflorum ◽  
Leaf Tissue ◽  
Lower Side ◽  
Soil P ◽  
Wet Weather ◽  
Irish Republic

Abstract A description is provided for Ascochyta desmazieresii. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Lolium multiflorum and L. perenne. DISEASE: Glume and leaf spot of Italian and perennial ryegrasses. At first leaf lesions start as small purplish or chocolate-brown spots with a distinct red-purple margin. With time these enlarge, become irregular or elliptical, up to 5 mm long and distinctly visible on both sides of the leaves. Finally the centres of older lesions fade to fawn to straw yellow with numerous pycnidia immersed within the leaf tissue on both sides of the leaves but usually abundant pycnidia occur on the lower side. GEOGRAPHICAL DISTRIBUTION: Asia (Japan); Europe (Belgium, Czechoslovakia, Denmark, France, Irish Republic, UK); N. America (USA, California, Oregon, Washington); S. America (Chile, Brazil). TRANSMISSION: No specific studies reported; infection is presumably spread by air-borne conidia in wet weather or heavy dews. The fungus is also probably carried over on crop residues and debris in soil.

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