MARC details
| 000 -LEADER |
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| fixed length control field |
04212nam a22004217a 4500 |
| 001 - CONTROL NUMBER |
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| control field |
G79742 |
| 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 |
20240919021103.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
121211s ||||f| 0 p|p||0|| | |
| 040 ## - CATALOGING SOURCE |
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| Original cataloging agency |
MX-TxCIM |
| 072 #0 - SUBJECT CATEGORY CODE |
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| Subject category code |
A50 |
| 072 #0 - SUBJECT CATEGORY CODE |
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| Subject category code |
F30 |
| 082 04 - DEWEY DECIMAL CLASSIFICATION NUMBER |
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| Classification number |
633.1147 |
| Item number |
BED |
| 100 1# - MAIN ENTRY--PERSONAL NAME |
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| Personal name |
Abdullayev, A.M. |
| Affiliation |
International caucasian conference on cereals and food legumes. Abstracts |
| 110 0# - 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) |
| 9 (RLIN) |
978 |
| 111 2# - MAIN ENTRY--MEETING NAME |
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| Location of meeting |
Tbilisi (Georgia) |
| Date of meeting |
14-17 Jun 2004 |
| 245 00 - TITLE STATEMENT |
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| Title |
New germplasm for winter bread wheat breeding |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) |
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| Place of publication, distribution, etc. |
Tbilisi (Georgia) |
| Name of publisher, distributor, etc. |
CIMMYT : |
| Date of publication, distribution, etc. |
2004 |
| 300 ## - PHYSICAL DESCRIPTION |
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| Extent |
p. 234 |
| 340 ## - PHYSICAL MEDIUM |
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| Material base and configuration |
Printed |
| 520 ## - SUMMARY, ETC. |
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| Summary, etc. |
In winter wheat breeding, progress in development of improved germplasm depends primarily on availability of valuable genetic material, right selection of parents for crosses and the knowledge of inheritance pattern for the most valuable traits for assessing the segregating populations. More than 100 combinations were used in crosses including a set of the local varieties and lines supplied by CIMMYT to produce improved germplasm with desired agronomic traits. The study ofthe F1 population detected true heterosis of various extent ( 1.5-42.5% ) for different parent combinations and for different traits. High true heterosis (35.7-42.5%) was observed for grain per spike and tillering in the populations obtained from crosses with participation of the CIMMYT - derived lines. Populations developed from crosses between the local varieties demonstrated high heterosis for grain weight per main spike and thousand-grain weight. A study of correlation between individual traits provided evidence that association between main spike height and number of grains per main spike is insignificant and varies between 0.06 and 0.21. Significant negative association (¡=-0.59-0.65) was found between number and weight of grain per spike in the populations obtained from the crosses ofthe CIMMYT -derived lines. In contrast, number of grain per spike and 1000 kernel weight were found to be positively associated (¡= 0.49-0.65) in the populations developed from crosses of the local varieties. Different inheritance patterns were observed for the quantitative traits in the first generation populations. Inheritance depended on their expression in the parental lines and ranged from dominance or over-dominance to depression. However, analysis of a big number of the first generation populations provided evidence that tillering, spike length, grain number and weight per spike are generally characterized by dominance and over-dominance, while stem height, spike length and 1000 kemel weight demonstrated codominance. It should be noted that high spike productivity Of the hybrids was conditioned by higher values of grain per spike in some cases and higher grain weight in other cases. The most valuable combinations were found to be those where high values of grain per spike were combined with high grain weight, affecting positively 1000 kemel-weight and total grain yield. The phenotypic expression of individual traits in the F 2 populations revealed a wide range of variation. The lowest variability was found for spike length. The highest variation factor was detected for number of grain per spike (V= 18.3-4 7.2% ) and weight of grain per spike (V=24.5-58.4%). This facilitates selection of transgressive segregants and their utilization in breeding for higher yield. Crosses with participation of the local varieties "Aran", " Azeri", (Mirbashir- 128), "Murov- 2" and others provided for a larger number of recombinants with optimal combination of higher number of grain per spike and desired plant height. |
| 546 ## - LANGUAGE NOTE |
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| Language note |
English |
| 591 ## - CATALOGING NOTES |
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| Affiliation |
0407|AGRIS 0401|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 |
Bread |
| 9 (RLIN) |
1027 |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Crossbreeding |
| 650 17 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Germplasm |
| Miscellaneous information |
AGROVOC |
| Source of heading or term |
|
| 9 (RLIN) |
1136 |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Heterosis breeding |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
Inheritance (genetics) |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Phenotypes |
| 650 17 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Varieties |
| Miscellaneous information |
AGROVOC |
| Source of heading or term |
|
| 9 (RLIN) |
1303 |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Wheat |
| 653 0# - INDEX TERM--UNCONTROLLED |
|---|
| Uncontrolled term |
CIMMYT |
| 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 |
Bedoshvili, D. |
| Relator term |
ed. |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
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| Koha item type |
Conference proceedings |