Heterosis, Combining Ability and Yield Prediction in Hybrids From Local Maize Inbred Lines

Studies were conducted to identify and select for superior maize inbred lines based on their performance per 5e, and to evaluate their performance and combining ability in all possible crosses. Performance and heterosis of the single crosses were evaluated at two locations, in Universiti Pertani...

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Main Author:	Sujiprihati, Sriani
Format:	Thesis
Language:	English English
Published:	1996
Subjects:	Heterosis Plant - Breeding Corn - Planting
Online Access:	http://psasir.upm.edu.my/id/eprint/10375/1/FP_1996_8_A.pdf
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id	my-upm-ir.10375
record_format	uketd_dc
spelling	my-upm-ir.103752011-03-30T03:07:20Z Heterosis, Combining Ability and Yield Prediction in Hybrids From Local Maize Inbred Lines 1996 Sujiprihati, Sriani Studies were conducted to identify and select for superior maize inbred lines based on their performance per 5e, and to evaluate their performance and combining ability in all possible crosses. Performance and heterosis of the single crosses were evaluated at two locations, in Universiti Pertanian Malaysia, Serdang. Furthermore, some promising double cross hybrids developed from the potential single crosses were also evaluated for performance and for comparison with the predicted. In general , most of the inbred lines exhibited poor performances due to inbreeding effects after successive generations of selfing, but some were however, found to have high potential for use in hybrid production. Hy-58, Hy-59 and Hy-60 were identified as the best performing F1 single-cross hybrids at both locations, with grain yields of 3703.7 kg/ha, 3940.7 kg/ha and 3451.9 kg/ha, respectively, at Field 2; 5659.3 kg/ha, 572 5.9 kg/ha and 5948.1 kg/ha, respectively, at Share Farm; and 468 1.5 kg/ha, 4833.3 kg/ha and 4700.0 kg/ha, respectively, in the locations combined. In general, hybrids that produced high yields were those formed between inbred parents that were themselves high yielding and from genetically diverse population sources. High heterosis was shown by grain yield, ear weight and grain weight per ear, moderate heterosis by number of kernels per row, ear height, plant height and ear length, while low heterosis was shown by ear diameter, number of kernel rows per ear, 100-grain weight and shelling percentage. Maturity characters showed negative heterosis, indicating earliness of the hybrids. Heterosis Plant - Breeding Corn - Planting 1996 Thesis http://psasir.upm.edu.my/id/eprint/10375/ http://psasir.upm.edu.my/id/eprint/10375/1/FP_1996_8_A.pdf application/pdf en public phd doctoral Universiti Pertanian Malaysia Heterosis Plant - Breeding Corn - Planting Faculty of Agriculture English
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English English
topic	Heterosis Plant - Breeding Corn - Planting
spellingShingle	Heterosis Plant - Breeding Corn - Planting Sujiprihati, Sriani Heterosis, Combining Ability and Yield Prediction in Hybrids From Local Maize Inbred Lines
description	Studies were conducted to identify and select for superior maize inbred lines based on their performance per 5e, and to evaluate their performance and combining ability in all possible crosses. Performance and heterosis of the single crosses were evaluated at two locations, in Universiti Pertanian Malaysia, Serdang. Furthermore, some promising double cross hybrids developed from the potential single crosses were also evaluated for performance and for comparison with the predicted. In general , most of the inbred lines exhibited poor performances due to inbreeding effects after successive generations of selfing, but some were however, found to have high potential for use in hybrid production. Hy-58, Hy-59 and Hy-60 were identified as the best performing F1 single-cross hybrids at both locations, with grain yields of 3703.7 kg/ha, 3940.7 kg/ha and 3451.9 kg/ha, respectively, at Field 2; 5659.3 kg/ha, 572 5.9 kg/ha and 5948.1 kg/ha, respectively, at Share Farm; and 468 1.5 kg/ha, 4833.3 kg/ha and 4700.0 kg/ha, respectively, in the locations combined. In general, hybrids that produced high yields were those formed between inbred parents that were themselves high yielding and from genetically diverse population sources. High heterosis was shown by grain yield, ear weight and grain weight per ear, moderate heterosis by number of kernels per row, ear height, plant height and ear length, while low heterosis was shown by ear diameter, number of kernel rows per ear, 100-grain weight and shelling percentage. Maturity characters showed negative heterosis, indicating earliness of the hybrids.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Sujiprihati, Sriani
author_facet	Sujiprihati, Sriani
author_sort	Sujiprihati, Sriani
title	Heterosis, Combining Ability and Yield Prediction in Hybrids From Local Maize Inbred Lines
title_short	Heterosis, Combining Ability and Yield Prediction in Hybrids From Local Maize Inbred Lines
title_full	Heterosis, Combining Ability and Yield Prediction in Hybrids From Local Maize Inbred Lines
title_fullStr	Heterosis, Combining Ability and Yield Prediction in Hybrids From Local Maize Inbred Lines
title_full_unstemmed	Heterosis, Combining Ability and Yield Prediction in Hybrids From Local Maize Inbred Lines
title_sort	heterosis, combining ability and yield prediction in hybrids from local maize inbred lines
granting_institution	Universiti Pertanian Malaysia
granting_department	Faculty of Agriculture
publishDate	1996
url	http://psasir.upm.edu.my/id/eprint/10375/1/FP_1996_8_A.pdf
_version_	1747811108405641216

Heterosis, Combining Ability and Yield Prediction in Hybrids From Local Maize Inbred Lines

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