MARC details
| 000 -LEADER |
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| fixed length control field |
03171nam a22003857a 4500 |
| 001 - CONTROL NUMBER |
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| control field |
G70476 |
| 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 |
20230711184626.0 |
| 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 |
92-9146-058-3 |
| 040 ## - CATALOGING SOURCE |
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| Original cataloging agency |
MX-TxCIM |
| 072 #0 - SUBJECT CATEGORY CODE |
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| Subject category code |
F01 |
| 072 #0 - SUBJECT CATEGORY CODE |
|---|
| Subject category code |
F30 |
| 090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN) |
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| Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) |
Look under series title |
| 100 1# - MAIN ENTRY--PERSONAL NAME |
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| Personal name |
Tongoona, P.B. |
| Field link and sequence number |
001713456 |
| Miscellaneous information |
Formerly Excellence in Breeding |
| 9 (RLIN) |
340 |
| 110 2# - MAIN ENTRY--CORPORATE NAME |
|---|
| Corporate name or jurisdiction name as entry element |
Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Addis Ababa (Ethiopia) |
| 245 00 - TITLE STATEMENT |
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| Title |
Genotype x environment interaction of wheat genotypes selected for adaptation to summer, rainfed conditions in Zimbabwe |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) |
|---|
| Place of publication, distribution, etc. |
Addis Ababa (Ethiopia) |
| Name of publisher, distributor, etc. |
CIMMYT : |
| Date of publication, distribution, etc. |
1999 |
| 340 ## - PHYSICAL MEDIUM |
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| Material base and configuration |
Printed |
| 520 ## - SUMMARY, ETC. |
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| Summary, etc. |
Twenty wheat (Triticum aestivum L.) genotypes selected for adaptation to summer, rainfed conditions were studied for their yield response under different environmental conditions. The environments included four levels of fertility, different sites (Harare and Nyanga) and two seasons (1994/95 and 1995/96 summer seasons). Contrasting genotypic responses were detected to fertility , site and seasons. Genotypic responses genera11y showed an initial increase then a decrease in yield with an increase in fertility during the 1994/95 season at both Nyanga and Harare. Yield levels of the entries were significantly lower at Nyanga than at Harare being about half of those attained at Harare. This pattern of response and yield levels was attributed to the drought which was experienced in that season and differences in actual precipitation at each of the two sites. During the 1995/96 season there was a general increase in yield with increase in fertility at Nyanga whilst at Harare there was a decline at the highest fertility level. This was attributed to adequate rainfall received during that season however it was not clear why the yield response showed a peak at Harare and no peak at Nyanga. Within the general trend shown, a few genotypes exhibited some inconsistent responses which was attributed to different genetic yield potentials of the entries. Yield levels varied from a low value of about 1000 kg/ha during the dry season of 1994/95 to a high value of about 5000 kg/ha during the almost normal season of 1995/96. Significant correlations were detected between yield and number of grains per spike (r = 0.621) and between yield and number of spikelets per spike (r= 0.583). These results showed that the potential for wheat production in some summer, rainfed environments in Zimbabwe exists but seasonal changes in rainfall would significantly impact on yield performance. Genotypes were classified according to stability of yield performance groups. |
| 546 ## - LANGUAGE NOTE |
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| Language note |
English |
| 591 ## - CATALOGING NOTES |
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| Affiliation |
0007|AGRIS 0101|AL-Wheat Program |
| 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 |
Adaptation |
| 650 17 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
Crop management |
| Miscellaneous information |
AGROVOC |
| Source of heading or term |
|
| 9 (RLIN) |
1061 |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Environmental factors |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
Fertilizing |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| 9 (RLIN) |
1133 |
| Topical term or geographic name as entry element |
Genotype environment interaction |
| Miscellaneous information |
AGROVOC |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Selection |
| 653 0# - INDEX TERM--UNCONTROLLED |
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| Uncontrolled term |
CIMMYT |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| 9 (RLIN) |
1296 |
| Topical term or geographic name as entry element |
Triticum aestivum |
| Miscellaneous information |
AGROVOC |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| 9 (RLIN) |
1134 |
| Topical term or geographic name as entry element |
Genotypes |
| Miscellaneous information |
AGROVOC |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
|---|
| Koha item type |
Conference proceedings |