MARC details
| 000 -LEADER |
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| fixed length control field |
03908nam a22003737a 4500 |
| 001 - CONTROL NUMBER |
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| control field |
G96007 |
| 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 |
20220104230315.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
121211s ||||f| 0 p|p||0|| | |
| 040 ## - CATALOGING SOURCE |
|---|
| Original cataloging agency |
MX-TxCIM |
| 090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN) |
|---|
| Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) |
CIS-6585 |
| 100 1# - MAIN ENTRY--PERSONAL NAME |
|---|
| Personal name |
Mwololo, J.K. |
| Affiliation |
From Soil to Soul: Crop Production for Improved African Livelihoods and a Better Environment for Future Generations; Programme and Abstracts of Papers. African Crop Science Society Conference, 10; Maputo (Mozambique); 10-13 Oct 2011. |
| 245 00 - TITLE STATEMENT |
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| Title |
Genetic diversity study in search for sources of resistance to the maize weevil among landrace accessions and inbred lines |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) |
|---|
| Name of publisher, distributor, etc. |
African Crop Science Society : |
| Date of publication, distribution, etc. |
2011 |
| 300 ## - PHYSICAL DESCRIPTION |
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| Extent |
p. 90 |
| 500 ## - GENERAL NOTE |
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| General note |
Abstract only |
| 520 ## - SUMMARY, ETC. |
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| Summary, etc. |
Maize occupies an important position in the world economy and trade as food, feed and industrial crop. Productivity is low in the developing countries due to biotic and abiotic constraints. The maize weevil (Sitophilus zeamais Motsch.) aggravates shortage of food by causing annual postharvest losses of maize of 20% on average. Studies have confirmed quantitative inheritance for storage pest resistance but breeding for traits to improved grain storage have been largely ignored. Genetic variability is important for progress in breeding program and new sources of resistance are needed for effective breeding for resistance to postharvest pests. The objective was to determine genetic diversity among maize genotypes for resistance to maize weevil based on biophysical traits of resistance. One hundred and ninety five genotypes (120 inbred lines and 75 Landrace accessions, including Resistant and susceptible checks) were used as the test crop. The experimental design in the field was an alpha lattice design with two rows of 2 x 5 and three replicates grown in two locations for two seasons. After harvest and drying the cobs were shelled and grain samples of 100g were taken and disinfested by fumigation with phostoxin for 7 days to eliminate infestation from the field. The kernels were placed in 250 ml jars, infested with 50 unsexed insects (maize weevil) and incubated for 3 months. The experimental design in the lab was randomized complete design. The contents in each jar were sieved to separate grains, insects and flour after 3 months. The grain weight loss (%), number of adult progeny, and flour production (%) were measured/ counted. Data on flour produced (%) and weight loss (%) was arcsine transformed while progeny data was log transformed before statistical analyses. The data was subjected to analysis of variance using the GLM procedure of SAS and means separated by least significant difference. There were highly significant (P <0.05) differences among the inbredlines and landrace accessions for maize weevil progeny emergence, grain weight loss and the flour weight. The mean weight loss for the most resistant genotypes in the landraces was 24% and 12.1% in the inbred lines. The most susceptible landraces had an average weight loss of 50.4 and 37 % in the inbred lines. Genetic diversity for maize weevil exists among tropical maize germplasm thus offering opportunity to exploit the variability towards reducing post-harvest storage losses through genetic improvement |
| 536 ## - FUNDING INFORMATION NOTE |
|---|
| Text of note |
Global Maize Program |
| 546 ## - LANGUAGE NOTE |
|---|
| Language note |
English |
| 594 ## - STAFFID |
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| StaffID |
INT2940|INT2460|INT2869 |
| 595 ## - COLLECTION |
|---|
| Collection |
CIMMYT Staff Publications Collection |
| 650 17 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Breeding |
| Miscellaneous information |
AGROVOC |
| Source of heading or term |
|
| 9 (RLIN) |
1029 |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| 9 (RLIN) |
1125 |
| Topical term or geographic name as entry element |
Genetic diversity |
| Miscellaneous information |
AGROVOC |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Maize weevil |
| 9 (RLIN) |
1175 |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Resistance |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Munyiri, S.W., |
| Relator term |
coaut. |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Okori, P., |
| Relator term |
coaut. |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Otim, M., |
| Relator term |
coaut. |
| 9 (RLIN) |
1928 |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Mugo, S.N. |
| Miscellaneous information |
Formerly Global Maize Program |
| Field link and sequence number |
INT2460 |
| 9 (RLIN) |
840 |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| 9 (RLIN) |
869 |
| Personal name |
Fentaye Kassa Semagn |
| Miscellaneous information |
Global Maize Program |
| Field link and sequence number |
INT2869 |
| Relator term |
coaut. |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| 9 (RLIN) |
878 |
| Personal name |
Tadele Tefera |
| Miscellaneous information |
Global Maize Program |
| Field link and sequence number |
INT2940 |
| Relator term |
coaut. |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
|---|
| Koha item type |
Conference proceedings |