MARC details
| 000 -LEADER |
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| fixed length control field |
03712nam a22004097a 4500 |
| 001 - CONTROL NUMBER |
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| control field |
G66270 |
| 003 - CONTROL NUMBER IDENTIFIER |
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| control field |
MX-TxCIM |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
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| control field |
20240919021051.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
121211s ||||f| 0 p|p||0|| | |
| 020 ## - INTERNATIONAL STANDARD BOOK NUMBER |
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| International Standard Book Number |
970-648-001-3 |
| 040 ## - CATALOGING SOURCE |
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| Original cataloging agency |
MX-TxCIM |
| 072 #0 - SUBJECT CATEGORY CODE |
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| Subject category code |
F30 |
| 072 #0 - SUBJECT CATEGORY CODE |
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| Subject category code |
H20 |
| 082 04 - DEWEY DECIMAL CLASSIFICATION NUMBER |
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| Classification number |
633.1194 |
| Item number |
DUV |
| 110 2# - MAIN ENTRY--CORPORATE NAME |
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| Corporate name or jurisdiction name as entry element |
Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico DF (Mexico) |
| 100 1# - MAIN ENTRY--PERSONAL NAME |
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| 9 (RLIN) |
97 |
| Personal name |
Ginkel, M. Van |
| 245 00 - TITLE STATEMENT |
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| Title |
Breeding for resistance to spot blotch in wheat: |
| Remainder of title |
Global perspective |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) |
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| Place of publication, distribution, etc. |
Mexico, DF (Mexico) |
| Name of publisher, distributor, etc. |
CIMMYT|UCL|BADC : |
| Date of publication, distribution, etc. |
1998 |
| 340 ## - PHYSICAL MEDIUM |
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| Material base and configuration |
Printed |
| 520 ## - SUMMARY, ETC. |
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| Summary, etc. |
Spot blotch (Bipolaris sorokiniana) is of increasing concern in developing countries. It mainly occurs in warm, humid wheat growing environments (ME5) in Latin America, Africa, the Indian Subcontinent, Southeast Asia, and China. More recently, spot blotch has also expanded into the cooler, traditional irrigated rice-wheat production areas (ME1), which may be due to pathogen adaptation, changes in varietal spectrum, reduction in tillage practices, a broader host-range, or climate modifications. In the hot and warm wheat production regions (ME5), wheat researchers consider spot blotch the number one economic pathogen. Total affected area is estimated at about 25 million ha. The lack of resistant, adapted cultivars is an urgent problem. Sources of spot blotch resistance are: Latin America (e.g., BH1146, CNT1), China (e.g., Shanghai #4, Suzhoe #8, and Yangmai #6), and wild relatives of wheat or alien species (e.g., Aegilops squarrosa, Thinopyrum curvifolium). One or six genes have been shown to be involved in resistance. No immunity in wheat is known. Low heritabilities, environmental components, and unknown variability in the pathogen may make breeding for resistance difficult. At CIMMYT, directed crosses are made between high yielding germplasm, adapted cultivars from target countries, and distinct sources of resistance. In Mexico, early generations are shuttled between Toluca (central highlands) and Cd. Obregon (coastal plains). Segregating germplasm is selected for resistance to diseases other than spot blotch, such as leaf and stem rusts, foliar blights, head scab, and for agronomic type, potential yield, and relative adaptive traits. ClMMYT's main testing site for spot blotch within Mexico is Poza Rica (21ºN, 60 masl). Due to high temperatures and relative humidity, spot blotch is naturally prevalent. In the F4-F7 populations, selected materials are grown in Poza Rica. Lines showing slow disease development, a "good finish", and plump healthy grain are selected. These are grown in yield trials under irrigated conditions at Cd. Obregon under late planting conditions to also allow selection for heat tolerance. Yield is the final deciding factor, plus grain appearance. The top entries are distributed internationally for multilocation testing in the Warm Areas Wheat Screening Nursery to about 50 cooperators around the world. Resistant, widely adapted lines are once again used in crosses at CIMMYT, thus building 011 what was achieved. |
| 546 ## - LANGUAGE NOTE |
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| Language note |
English |
| 591 ## - CATALOGING NOTES |
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| Affiliation |
9806|AGRIS 9802|anterior|R97-98PROCE|FINAL9798 |
| 595 ## - COLLECTION |
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| Collection |
CIMMYT Publications Collection |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
Blotches |
| 9 (RLIN) |
2694 |
| 650 17 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
Breeding methods |
| Miscellaneous information |
AGROVOC |
| Source of heading or term |
|
| 9 (RLIN) |
1030 |
| 650 17 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Disease resistance |
| Miscellaneous information |
AGROVOC |
| Source of heading or term |
|
| 9 (RLIN) |
1077 |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
Environmental factors |
| 650 17 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Plant diseases |
| Miscellaneous information |
AGROVOC |
| Source of heading or term |
|
| 9 (RLIN) |
1206 |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Spots |
| 653 0# - INDEX TERM--UNCONTROLLED |
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| Uncontrolled term |
CIMMYT |
| 650 17 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
Triticum |
| Miscellaneous information |
AGROVOC |
| Source of heading or term |
|
| 9 (RLIN) |
1295 |
| 650 17 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Plant breeding |
| Miscellaneous information |
AGROVOC |
| Source of heading or term |
|
| 9 (RLIN) |
1203 |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Duveiller, E.|Dubin, H.J.|Reeves, J.|McNab, A. |
| Relator term |
eds. |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
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| 9 (RLIN) |
661 |
| Personal name |
Rajaram, S. |
| Relator term |
coaut. |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
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| Koha item type |
Conference proceedings |