MARC details
| 000 -LEADER |
|---|
| fixed length control field |
04357nab|a22004817a|4500 |
| 001 - CONTROL NUMBER |
|---|
| control field |
68067 |
| 003 - CONTROL NUMBER IDENTIFIER |
|---|
| control field |
MX-TxCIM |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
|---|
| control field |
20241211082258.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
|---|
| fixed length control field |
202410s2024||||mx |||p|op||||00||0|eng|d |
| 022 ## - INTERNATIONAL STANDARD SERIAL NUMBER |
|---|
| International Standard Serial Number |
2073-4395 (Online) |
| 024 8# - OTHER STANDARD IDENTIFIER |
|---|
| Standard number or code |
https://doi.org/10.3390/agronomy14102443 |
| 040 ## - CATALOGING SOURCE |
|---|
| Original cataloging agency |
MX-TxCIM |
| 041 ## - LANGUAGE CODE |
|---|
| Language code of text/sound track or separate title |
eng |
| 100 1# - MAIN ENTRY--PERSONAL NAME |
|---|
| Personal name |
Sadessa, K. |
| 9 (RLIN) |
2502 |
| 245 10 - TITLE STATEMENT |
|---|
| Title |
Agronomic performance and resistance to maize lethal necrosis in maize hybrids derived from doubled haploid lines |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) |
|---|
| Name of publisher, distributor, etc. |
MDPI, |
| Date of publication, distribution, etc. |
2024. |
| Place of publication, distribution, etc. |
Basel (Switzerland) : |
| 500 ## - GENERAL NOTE |
|---|
| General note |
Peer review |
| 500 ## - GENERAL NOTE |
|---|
| General note |
Open Access |
| 520 ## - SUMMARY, ETC. |
|---|
| Summary, etc. |
Maize (Zea mays L.) is one of the most widely cultivated grain crops globally. In sub-Saharan Africa (SSA), it plays an important role in ensuring both food and income security for smallholder farmers. This study was conducted to (i) assess the performances of testcross hybrids constituted from maize lethal necrosis (MLN) tolerant doubled haploid (DH) lines under various management conditions; (ii) estimate the combining ability effects and determine the nature of gene action in the DH lines; and (iii) identify DH lines and testcross hybrids for resistance to MLN, high grain yield, and other important traits. Eleven DH lines were crossed with 11 single-cross testers using the line-by-tester mating design, and 115 successful testcross hybrids were generated. These hybrids, along with five commercial check hybrids, were evaluated across four optimum management conditions, two MLN artificial inoculations, and one managed drought environment in Kenya. Under each management condition, the effects of genotypes, environments, and genotype-by-environment interactions were significant for grain yield (GY) and most other traits. Hybrids T1/L3, T10/L3, and T11/L3 exhibited higher grain yields under at least two management conditions. A combining ability analysis revealed that additive gene effects were more important than non-additive effects for GY and most other traits, except for leaf senescence (SEN) and MLN disease severity score. DH line L3 exhibited a desirable general combining ability (GCA) effect for GY, while L5 was the best general combiner for anthesis date (AD) and plant height (PH) across all management conditions. DH lines L2, L6, and L7 showed negative GCA effects for MLN disease severity. Single-cross testers T11 and T10 were good general combiners for GY under all management conditions. Hybrids T2/L11, T9/L10, and T2/L10 demonstrated high specific combining ability (SCA) effects for GY under all conditions. This study identified DH lines and testers with favorable GCA effects for grain yield, MLN resistance, and other agronomic traits that can be used in breeding programs to develop high-yielding and MLN-resistant maize varieties. Better-performing testcross hybrids identified in the current study could be verified through on-farm testing and released for commercial production to replace MLN-susceptible, low-yield hybrids grown in the target ecologies. |
| 546 ## - LANGUAGE NOTE |
|---|
| Language note |
Text in English |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Inoculation |
| Source of heading or term |
AGROVOC |
| 9 (RLIN) |
5194 |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Combining ability |
| Source of heading or term |
AGROVOC |
| 9 (RLIN) |
2367 |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Doubled haploids |
| Source of heading or term |
AGROVOC |
| 9 (RLIN) |
29363 |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Maize |
| Source of heading or term |
AGROVOC |
| 9 (RLIN) |
1173 |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Necrosis |
| Source of heading or term |
AGROVOC |
| 9 (RLIN) |
1187 |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Drought stress |
| Source of heading or term |
AGROVOC |
| 9 (RLIN) |
1081 |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Zea mays |
| Source of heading or term |
AGROVOC |
| 9 (RLIN) |
1314 |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Beyene, Y. |
| Miscellaneous information |
Global Maize Program |
| Field link and sequence number |
INT2891 |
| 9 (RLIN) |
870 |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Ifie, B.E. |
| 9 (RLIN) |
9175 |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Gowda, M. |
| Miscellaneous information |
Global Maize Program |
| Field link and sequence number |
I1705963 |
| 9 (RLIN) |
795 |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Mahabaleswara, S.L. |
| Miscellaneous information |
Global Maize Program |
| Field link and sequence number |
I1706749 |
| 9 (RLIN) |
2827 |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Olsen, M. |
| Miscellaneous information |
Global Maize Program |
| Field link and sequence number |
INT3333 |
| 9 (RLIN) |
923 |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Tongoona, P.B. |
| Field link and sequence number |
001713456 |
| Miscellaneous information |
Formerly Excellence in Breeding |
| 9 (RLIN) |
340 |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Offei, S.K. |
| 9 (RLIN) |
17257 |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Danquah, E. |
| 9 (RLIN) |
6758 |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Prasanna, B.M. |
| Miscellaneous information |
Global Maize Program |
| Field link and sequence number |
INT3057 |
| 9 (RLIN) |
887 |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Dagne Wegary Gissa |
| Miscellaneous information |
Global Maize Program |
| Field link and sequence number |
INT3401 |
| 9 (RLIN) |
952 |
| 773 0# - HOST ITEM ENTRY |
|---|
| Title |
Agronomy |
| Related parts |
v. 14, no. 10, art. 2443 |
| Place, publisher, and date of publication |
Basel (Switzerland) : MDPI, 2024. |
| International Standard Serial Number |
2073-4395 |
| 856 4# - ELECTRONIC LOCATION AND ACCESS |
|---|
| Link text |
Open Access through DSpace |
| Uniform Resource Identifier |
https://hdl.handle.net/10883/35009 |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
|---|
| Koha item type |
Article |
| Suppress in OPAC |
No |
| Source of classification or shelving scheme |
Dewey Decimal Classification |