Title:	Genetic resistance to soil chemical toxicities and deficiencies.
Authors:	GOURLEY, L. M. WATSON, C. E. SCHAFFERT, R. E. PAYNE, W. A.
Affiliation:	ROBERT EUGENE SCHAFFERT, CNPMS.
Date Issued:	1997
Citation:	In: INTERNATIONAL CONFERENCE ON GENETIC IMPROVEMENT OF SORGHUM AND PEARL MILLET, 1996, Lubbock, Texas. Proceedings. Cali: INTSORMIL/ICRISAT, 1997. p.461-480.
Description:	Breeding new crop cultivars for adaptation to stress-related phenomena due to soil chemical toxicity and deficiency is a complex process. Data from nutrient culture trials, in which seedling plants are stressed with a deficiency or excess of mineral elements, do not correlate well with those from similar field stress conditions using the same germplasm. Further, evaluating segregating populations in nutrient culture can result in little or no genetic gain due to selection. Field screening efforts are plagued with genotype x environmental interactions caused by a multitude of biotic and abiotic factors. Selecting the proper level of stress for field evaluations and maintaining this level in a dynamically changeable medium like soil can be difficult. Genetic improvement of sorghum under field conditions similar to those encountered by farmers, however, has nearly always been obtained.
Thesagro:	Genética Resistência Química Solo
NAL Thesaurus:	toxicity soil
Keywords:	Toxicidade Chemical Genetic Resistance
Series/Report no.:	(Publication, 97-5).
Type of Material:	Artigo em anais e proceedings
Access:	openAccess
Appears in Collections:	Artigo em anais de congresso (CNPMS)