Knowledge Center Catalog

Summary and conclusion of session on breeding for abiotic stresses (Record no. 6471)

MARC details
000 -LEADER
fixed length control field 05024nam a22004577a 4500
001 - CONTROL NUMBER
control field G448088
003 - CONTROL NUMBER IDENTIFIER
control field MX-TxCIM
005 - DATE AND TIME OF LATEST TRANSACTION
control field 20240919021059.0
008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION
fixed length control field 121211s ||||f| 0 p|p||0|| |
040 ## - CATALOGING SOURCE
Original cataloging agency MX-TxCIM
072 #0 - SUBJECT CATEGORY CODE
Subject category code A50
072 #0 - SUBJECT CATEGORY CODE
Subject category code E14
090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN)
Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) CIS-3394
100 1# - MAIN ENTRY--PERSONAL NAME
Personal name Pandey, S.
Affiliation Asian Regional Maize Workshop, 7: Strengthening hybrid maize technology and public-private partnership to accelerate maize production in the Asian region
9 (RLIN) 1500
110 0# - MAIN ENTRY--CORPORATE NAME
Corporate name or jurisdiction name as entry element Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico, DF (Mexico)
111 2# - MAIN ENTRY--MEETING NAME
Meeting name or jurisdiction name as entry element 7, Proceedings of the Asian Regional Maize Workshop
Location of meeting Los Baños (Philippines)
Date of meeting 23-27 Feb 1998
245 00 - TITLE STATEMENT
Title Summary and conclusion of session on breeding for abiotic stresses
260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT)
Place of publication, distribution, etc. Los Baños, Laguna (Philippines)
Name of publisher, distributor, etc. PCARRD :
Date of publication, distribution, etc. 2000
300 ## - PHYSICAL DESCRIPTION
Extent p. 613-614
340 ## - PHYSICAL MEDIUM
Material base and configuration Printed
520 ## - SUMMARY, ETC.
Summary, etc. j. Bolanos Defined drought resistance as capacity t yield without stress symptoms and tolerance as yielding capacity with symptoms. Studied 14 traits previously known to be associated with drought tolerance and found that ears per plant and shorter anthesis to silking (ASI) interval were most useful. ASI is manifestation of partitioning of dry matter to the ear. One day of ASI reduces maize yield by 10%. Drought stress increases the variance for barrenness, increasing a breeder's ability to identify genotypes that invest more in the ear.|Y. Chantachume Discussed the importance of breeding of stress tolerance in light of the rising cost of inputs, especially N fertilizers, in South East Asia. Studied inbred lines under low and high N levels and found that ears per plant and ear aspect were closely associated with N use efficiency. Yield under low and high N had a phenotypic correlation of 0.71, which lead him to conclude that only one level of N was sufficient to select for N efficient maize genotypes. For drought, he found that wilt score and plant recovery were traits that showed a correlation of about 0.50 with yield under this stress.|N.N. Singh About 3 million ha of maize area in Asia was under water-logging (WL), nearly 2.5 million ha in India alone. Late maturity materials suffer twice as much yield reduction under WL (50% ) as do the medium and early maturity germplasms (25% ). ASI is correlated with yielding ability under WL. Adventitious roots help reduce WL losses. One white and one yellow endosperm pools have been developed and improved for seven cycles under WL treatments applied for three days at seedling and pre-flowering stages. WL at seedling stage is most critical. Lines, hybrids, and synthetics will be developed and several basic studies are planned.|C. de Leon Nearly 60% of agricultural land in acidic. In such soils, All toxicity and P deficiency are prevalent. Four populations have been developed, two white and two yellow endosperm. Populations within one color are heterotic and . are being improved using reciprocal recurrent selection. Additive and non-additive genetic variances provide tolerance and narrow sense heritability averages about 36%. Dominance x environment interactions are insignificant, suggesting that stress tolerant hybrids can be developed more efficiently. Superior single crosses yield about 50% more (6- 7 tons) than superior OPVs under stress but tolerant materials yield well under both stress and nonstress conditions.|S. Vasal Suggested integrating disciplines and scientists to develop stress tolerant germplasm more efficiently. Maize is a plant with "a crop of options" and stress breeding "is a big puzzle". Drought, low N, high density, inbreeding, etc., all contribute to stress. Stress breeding is complex in both genetic and environmental manipulations. Germplasm with high mean and adequate genetic variances are ideal for stress breeding. Suitable screening techniques are a necessity. Most breeding procedures work but suggested we use the ones more appropriate for the level of heritability for the trait. Selection for stress tolerance can be easily integrated in an on-going breeding program and must be an integral part of any maize research program. Traits that generally contribute to stress tolerance include yield, ASI, ear aspect, and ears per plant. Lines tolerant to most stresses are available from CIMMYT, in every maturity group.
546 ## - LANGUAGE NOTE
Language note English
591 ## - CATALOGING NOTES
Affiliation 0208|AGRIS 0201|AL-Maize Program|R01PROCE
595 ## - COLLECTION
Collection CIMMYT Staff Publications Collection
650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Acid soils
650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Drought resistance
650 17 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Fertilizers
Miscellaneous information AGROVOC
Source of heading or term
9 (RLIN) 1111
650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Genetic control
9 (RLIN) 1694
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 17 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Inbred lines
Miscellaneous information AGROVOC
Source of heading or term
9 (RLIN) 1155
650 17 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Maize
Miscellaneous information AGROVOC
Source of heading or term
9 (RLIN) 1173
650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Stress
9 (RLIN) 1277
653 0# - INDEX TERM--UNCONTROLLED
Uncontrolled term CIMMYT
650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM
9 (RLIN) 1313
Topical term or geographic name as entry element Yields
Miscellaneous information AGROVOC
650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM
9 (RLIN) 1151
Topical term or geographic name as entry element Hybrids
Miscellaneous information AGROVOC
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 Faustino, F.,
Relator term coaut.
700 1# - ADDED ENTRY--PERSONAL NAME
Personal name Vasal, S.K.|Gonzalez Ceniceros, F.|XiongMing, F.
Relator term eds.
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Koha item type Conference proceedings
Holdings
Date last seen Total Checkouts Full call number Barcode Copy number Price effective from Koha item type Lost status Source of classification or shelving scheme Damaged status Not for loan Collection code Withdrawn status Home library Current library Date acquired
02/10/2015   CIS-3394 631362 1 02/10/2015 Conference proceedings Not Lost Dewey Decimal Classification     CIMMYT Staff Publications Collection   CIMMYT Knowledge Center: John Woolston Library CIMMYT Knowledge Center: John Woolston Library 02/10/2015

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