| 000 | 02663nam a22003617a 4500 | ||
|---|---|---|---|
| 001 | G65031 | ||
| 003 | MX-TxCIM | ||
| 005 | 20211006073348.0 | ||
| 008 | 121211s ||||f| 0 p|p||0|| | | ||
| 020 | _a92-9146-025-7 | ||
| 040 | _aMX-TxCIM | ||
| 072 | 0 | _aH20 | |
| 082 | 0 | 4 |
_a633.15 _bEAS No. 5 |
| 100 | 1 |
_aAdenle, V. _uMaize Productivity Gains through Research and Technology Dissemination. Proceedings of the Eastern and Southern Africa Regional Maize Conference, 5; Arusha (Tanzania); 3-7 Jun 1996 |
|
| 110 | 2 | _aCentro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico DF (Mexico) | |
| 245 | 0 | 0 | _aDowny mildew diseases of maize in Nigeria |
| 260 |
_aAddis Ababa (Ethiopia) _bCIMMYT : _c1997 |
||
| 340 | _aPrinted | ||
| 520 | _aAnother downy mildew of the genus Peronosclerospora on maize has now been isolated in Nigeria, but the downy mildew disease of maize, caused by Peronosclerospora sorghi, is presently the most damaging maize disease in Nigeria. The maize strain of the pathogen is thought to survive during the dry season on maize cultivated in hydromorphic valleys in southwestern Nigeria. Kernels harvested from a heavily infected farmer's field were subjected to histological studies which clearly revealed the presence of mycelium in the endosperm, scutellum, and near the embryo of the maize kernels. Two susceptible maize varieties and a cultivar of sweet corn have been observed for further evidence of internally seed-borne P. sorghi viz: (1) Pool-16, (2) Funtua-88TZSR-W (3) Sweet corn (Golden bantam). Peronosclerospora sorghi mycelia were observed in the kernels of the three. Most Nigerian small-scale farmers buy seed from the local market or use their saved seed. When the seed is not properly dried, mycelium may remain viable and could be a source of primary infection. Inoculum within seeds is an important means by which many pathogens reach areas hitherto free from disease. Seed-borne mycelium could be one mode of survival of this pathogen and it could account for the recent sporadic spread of downy mildew in southwestern Nigeria. The risk of transmitting maize downy mildew via living mycelium in dried seed is currently being investigated. | ||
| 546 | _aEnglish | ||
| 591 | _a9801|AGRIS 9702 | ||
| 593 | _aJose Juan Caballero | ||
| 595 | _aCPC | ||
| 650 | 1 | 0 | _aDisease control |
| 650 | 1 | 0 | _aMildews |
| 650 | 1 | 0 | _aNigeria |
| 650 | 1 | 7 |
_aPlant diseases _gAGROVOC _2 _91206 |
| 653 | 0 | _aCIMMYT | |
| 650 | 1 | 0 |
_91314 _aZea mays _gAGROVOC |
| 700 | 1 |
_aCardwell, K.F., _ecoaut. |
|
| 700 | 1 |
_aRansom, J.K.|Palmer, A.F.E.|Zambezi, B.T.|Mduruma, Z.O.|Waddington, S.R.|Pixley, K.V.|Jewell, D.C. _eeds. |
|
| 942 | _cPRO | ||
| 999 |
_c9538 _d9538 |
||