The performance of exotic maize inbred lines and their contribution to variety development in Mauritius

Code (CO)	MSI99P0097
Author (AU)	Govinden, N. Rughoo, M.
Title - English (ET)	The performance of exotic maize inbred lines and their contribution to variety development in Mauritius
Thesis-Parent title (TH)	Gevers, H. O. (ed.), Proceedings of the Ninth South African Maize Breeding Symposium, held at Cedara College, Summer Grain Sub-Centre, March 20-22, 1990
Document Type(DT)	Book chapter
Date of publication (DP)	1992
Series (SE)	Department of Agricultural Development, Technical Communication, 232
Source (SO)	p. 26-30
ISBN (BN)	0-621-14226-3
Publisher (PB)	Pretoria, Department of Agricultural Development
Language of text (LT)	En
Language of summaries (LS)	En
Abstract (AB)	Maize inbred lines have been imported from USA and South Africa for the purpose of developing two groups of hybrids: early-maturing hybrids for intercropping with sugar cane and full-season ones for growing in pure stands in rotation with sugar cane. In crosses with local R lines, the American lines have not performed to the level of hybrids presently grown. This may be due to their poor adaptation and particularly, to their susceptibility to leaf diseases. Some South African lines, in crosses with R lines and with CIMMYT/IITA varieties have outyielded the full-season controls in on-station and on-farm trials, and one hybrid of I 137TN with either Ferke LSR-Y81 or Antigua Veracruz 181 will be tentatively released in 1990. None of the hybrids involving American or South African lines was early enough for cultivation in sugarcane interrows. Because of disease severity, it has not been possible to effectively measure the heterosis and combining ability of the lines, but enough information has been obtained to categorise the local R lines in various groups and to short-list the best exotic lines. These or their disease resistant versions, if available, will now be used to create complementary pools for use as base materials in a comprehensive breeding programme.
Descriptors - English (DE)	MAIZE ZEA MAYS BREEDING VARIETIES
Descriptors - Geographic (DG)	MAURITIUS
Sort Key 1(K1)	Maize: Genetics and Breeding
Sort Key 2 (K2)	Varieties
Date record entered (DA)	1992-01-10
Language of analysis (LA)	En
Affiliation (AF)	Mauritius Sugar Industry Research Institute
Location (LO)	FC
Processing status (PS)	CAT
MSIRI Staff (MS)	FC