Selection of parents for low nitrogen stress through the combining ability of maize partially inbred lines

Heinz, Rafael; Ribeiro, Larissa Pereira; Gonçalves, Manoel Carlos; Bhering, Leonardo Lopes; Teodoro, Paulo Eduardo

doi:10.4025/actasciagron.v41i1.42705

Cited by 3 publications

(2 citation statements)

References 12 publications

(15 reference statements)

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“…Badu-Apraku et al (2012), Ogunniyan dan Olakojo (2014), serta Emede dan Alika (2015) merekomendasikan penggunaan karakter sekunder untuk seleksi tidak langsung jagung toleran N rendah. Perbedaan aksi gen pengendali suatu karakter pada kondisi N optimal dan N rendah diungkapkan oleh Annor et al (2019) dan Heinz et al (2019). Noëlle et al (2017) memperoleh empat galur dengan nilai daya gabung baik pada kondisi N rendah dan satu pasangan persilangan yang berpenampilan bagus pada kondisi N tinggi dan rendah melalui line x tester.…”

Section: Pendahuluanunclassified

Parameter Genetik dan Daya Gabung Hasil dan Komponen Hasil Jagung pada Tiga Taraf Pemupukan N

Priyanto

Efendi

Azrai

2021

j. penelit. pertan. tanam. pangan

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Low maize yields due to low nitrogen generally occur on marginal land. Maize development in Indonesia is directed at marginal land due to limited fertile land, especially in other lands in Indonesia besides Java. Therefore, the assembly of low N tolerant maize varieties plays an important role in increasing production on marginal land. The improvement of low N tolerant hybrid maize was required. Information on the combining ability of inbred lines was important in the hybrid maize breeding program. This research aims were to determine genetic parameters, general combining ability, specific combining ability of maize lines and at three levels of N fertilization. This research was conducted at the Bajeng Experimental farm South Sulawesi from August to November 2019. The research was arranged in a split-plot design with two replications. The main plots were three nitrogen levels i.e. 0 kg N/ ha, 100 kg N/ha, 200 kg N/ha and the subplots were 36 hybrids formed from a half diallel cross and its parents. The results showed that compared to yield at 200 kg N/ha, yield at 100 kg N/ha and 0 kg N/ha reduced 18,80% and 38,69% respectively. ear number, ear weight, shelling percentage and number of seeds per row were controlled by non-additive genes, while moisture content, 100 seeds weight, ear length and number of rows per ear were controlled by additives gene. Lines AVLN 118-7 and AVLN 83-2 have good GCA for yield grain overall levels of fertilization. Crosses AVLN 83-2/AVLN 124-4, AVLN 83-2/AVLN 32-8, and AVLN 122-2/ AVLN 124-9 have the good combining ability under both low and high N conditions. They could be used to develop low N tolerant varieties.

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Section: Pendahuluanunclassified

Parameter Genetik dan Daya Gabung Hasil dan Komponen Hasil Jagung pada Tiga Taraf Pemupukan N

Priyanto

Efendi

Azrai

2021

j. penelit. pertan. tanam. pangan

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“…After training or technical guidance, farmers understand several things in the process of making hybrid maize seeds. As many as 99% of farmers and officers understand the existence of male and female parent, and how to plant male parent earlier than female parent [7,8]. All growers know why male parent should be planted early and when to dispose of male flowers.…”

Section: The Level Of Knowledge and Understanding Of Farmers In The Production Of Hybrid Maize Seedsmentioning

confidence: 99%

Management and implementation models on seed production of hybrid maize based on labor intensive

Susilawati¹,

Liana²

2021

E3S Web Conf.

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The production of hybrid maize seeds at the field level can be done by farmers, with the main constraints being limited human resources and capital. For economic recovery during Covid-19 in 2020, the Gunung Mas district government launched a "Cash labor-intensive program" to the community. One of the groups, Sei Kurun farmer group, used it for an innovative and productive hybrid maize seed business. The goal is to grow group as breeder of hybrid maize seed, and empower farmers in a productive and sustainable manner. The method applied is in the form of cooperation and assistance between farmer groups, the Agriculture Service as a partner and prospective buyer of the seeds produced, and AIAT of Central Kalimantan as a companion for the application of technology. The results showed that cash funds for JH 37 hybrid maize seeds can be implemented on 3 hectares, and have produced 1.5 tons of F1 hybrid seeds, which are then sold through the District Agriculture Office program. with a profit of IDR 35,440,000. This farming is feasible with an R/C of 3.08, and becomes a profitable and sustainable farm, as well as a choice of model for using labor-intensive funds.

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Phenotypic and Genetic Parameters Estimated for Fresh Corn Under Different Nutrient Availability1

et al. 2021

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The objective of this work was to estimate and compare phenotypic and genetic parameters after three cycles of intrapopulation recurrent selection for fresh corn grown under three nutrient availability conditions. Three experiments derived from the same population (MV-003) were conducted to assess the ability of progenies to absorb nutrients, one under adequate fertilization (control; MV-006), one under low nitrogen availability (N; MV-006N), and one under low phosphorus availability (P; MV-006P). The experiments were carried out in randomized blocks, with 64 half-sib progenies and three replications for each nutritional condition. Chlorophyll index, plant height, ear insertion, ear diameter, ear length, unhusked ear yield, and marketable husked ear were evaluated. The populations showed variability for the three nutrient availability conditions. The variability reduced after only three selection cycles; thus, evaluating a higher number of half-sib progenies, above 64, under low N and P availability is indicated. The rates used to identify the most efficient progenies in breeding programs should be close to the appropriate one, with a slow reduction after the selection cycles. The variability will be thus maintained, with a greater possibility of identifying more promising progenies. In addition, the frequency of favorable alleles increases more gradually and effectively. The N and P rate of 60 kg ha-1 is not indicated as a critical level for the initial phase of the program.

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Selection of parents for low nitrogen stress through the combining ability of maize partially inbred lines

Cited by 3 publications

References 12 publications

Parameter Genetik dan Daya Gabung Hasil dan Komponen Hasil Jagung pada Tiga Taraf Pemupukan N

Parameter Genetik dan Daya Gabung Hasil dan Komponen Hasil Jagung pada Tiga Taraf Pemupukan N

Management and implementation models on seed production of hybrid maize based on labor intensive

Phenotypic and Genetic Parameters Estimated for Fresh Corn Under Different Nutrient Availability1

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