MARC details
| 000 -LEADER |
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| fixed length control field |
04721nam a22004697a 4500 |
| 001 - CONTROL NUMBER |
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| control field |
G63138 |
| 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 |
20240919021159.0 |
| 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 |
| 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 author name |
| 100 1# - MAIN ENTRY--PERSONAL NAME |
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| Personal name |
Quero Carrillo, Adrian Raymundo |
| Affiliation |
Montecillo, Mex. (Mexico). 1993. 136 p |
| 110 2# - MAIN ENTRY--CORPORATE NAME |
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| Corporate name or jurisdiction name as entry element |
Colegio de Postgraduados, Montecillo (Mexico). Centro de Ganaderia |
| 245 00 - TITLE STATEMENT |
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| Title |
[Paper on reproductive compounds, ploidy level and morphology of forage in Tripsacum genus] |
| 246 00 - VARYING FORM OF TITLE |
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| Title proper/short title |
Estudio de componentes reproductivos, nivel de ploidia y morfologia forrajera en el genero Tripsacum |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) |
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| Date of publication, distribution, etc. |
1993 |
| 340 ## - PHYSICAL MEDIUM |
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| Material base and configuration |
Printed |
| 500 ## - GENERAL NOTE |
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| General note |
Nationality: MX |
| 500 ## - GENERAL NOTE |
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| General note |
Thesis (MC) Especialista en Ganaderia. 11 ilus.; 20 tablas; 146 ref. Resumenes (En, Es) |
| 520 ## - SUMMARY, ETC. |
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| Summary, etc. |
Con el proposito de definir mecanismos de utilidad para el mejoramiento genetico en el genero Tripsacum y una mayor comprension del fenomeno de apomixis, se estudio la coleccion de 203 plantas (80 poblaciones) que el Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT) conserva en Tlaltizapan, Morelos; los estudios de laboratorio se desarrollaron en las instalaciones de CIMMYT en El Batan, Texcoco, Edo. de Mexico. La colecta comprende diez especies (Tripsacum australe, T. bravum, T. dactyloides, T. andersonii, T. intermedium, T. maizar, T. zopilotense, T. peruvianum, T. lanceolatum y T. pilosum). Se llevaron a cabo estudios de citologia, embriologia (mediante clareamiento de ovarios), prueba de progenie (por electroforesis), morfologia y cruzamientos intra e interespecificos. Para los estudios citogeneticos, se mentuvieron en invernadero macollos de las plantas bajo estudio, colectandose puntas de raiz de cuatro semanas de edad; se realizaron conteos cromosomicos por tincion con aceto-orceina. Se encontraron especimenes diploides en T. zopilotense, T. australe, T. maizar y T. peruvianum (8, 3, 2 y 1 planta respectivamente); el resto de las especies estudiadas no mostraron individuos diploides, por lo que, si se pretende utilizarlas para propositos de mejoramiento genetico, este aspecto seria un factor limitante. Se observo una abundancia de individuos poliploides (basicamente tetraploides), algunos triploides y T. andersonii con 64 cromosomas. Para los estudios de embriologia se disectaron inicialmente 30 ovarios por poblacion y se clasificaron por tamano; se evaluaron diferentes tecnicas de clareamiento, encontrandose que la de Young et al. (1979) fue la mas adecuada para el genero; asi mismo, se determino el tamano adecuado para el estudio de la meiosis en la celula madre de la megaspora, el cual resulto ser de ovarios con tamano menor o igual a 2 mm. Para el estudio de la meiosis se evaluaron 17 poblaciones, correpondientes a 9 especies del genero (27 plantas), disectandose 30 ovarios por planta; se procedio al analisis de dichos ovarios, en plantas diploides y tetraploides, encontrandose en plantas diploides la presencia de tetradas y en poliploides la presencia de diadas, lo cual en todos los casos correpondio al nivel de ploidia. Para efectuar los estudios de progenie se colectaron semillas de diferentes plantas (plantas madre), se disectaron los embriones y se sembraron en medio de cultivo a base de solucion nutritiva y se desarrollaron bajo condiciones adecuadas con el proposito de utilizarlos en pruebas de electroforesis en gel de almidon; se llevaron a cabo 16 corrimientos electroforeticos en siete sistemas enzimaticos A Tripsacum collection (T. andersonni, T. australe, T. bravum, T. dactyloides, T. intermedium, T. maizar, T. peruvianum, T. lanceolatum, T. zopilotense and T. pilosum, 203 plantas, 80 populations) was studied. Cytological studies were done with tillers of these species grown in greenhouse; samples of root tips (four weeks of development) were collected and chromosomes counting was done by orcein coloration. Plant diploids were found in zopilotense, australe, maizar and peruvianum (8, 3, 2 and 1); other species did not show diploids. For embryology |
| 546 ## - LANGUAGE NOTE |
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| Language note |
Spanish |
| 591 ## - CATALOGING NOTES |
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| Affiliation |
95-098702 |
| 592 ## - HEADER |
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| Header |
MX-CP 1993 QUERO M r |
| 595 ## - COLLECTION |
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| Collection |
Thesis Collection |
| 595 ## - COLLECTION |
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| Collection |
Thesis Supported by CIMMYT |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
Analytical methods |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
Asexual reproduction |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
Biological development |
| 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 |
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| Topical term or geographic name as entry element |
Crops |
| Miscellaneous information |
AGROVOC |
| Source of heading or term |
|
| 9 (RLIN) |
1069 |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
Gramineae |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
Hybridization |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
Physiological functions |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
Plant structure |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
Processing |
| 9 (RLIN) |
1218 |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
Reproduction |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
Separating |
| 9 (RLIN) |
1255 |
| 650 17 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
Plant breeding |
| Miscellaneous information |
AGROVOC |
| Source of heading or term |
|
| 9 (RLIN) |
1203 |
| 740 ## - ADDED ENTRY--UNCONTROLLED RELATED/ANALYTICAL TITLE |
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| Uncontrolled related/analytical title |
63138 |
| 740 ## - ADDED ENTRY--UNCONTROLLED RELATED/ANALYTICAL TITLE |
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| Uncontrolled related/analytical title |
74915 |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
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| Koha item type |
Book |