Advanced cycle pedigree breeding in sunflower. I: Genetic variability and testcross hybrid performance for seed yield and other agronomic traits

Chigeza, Godfree; Mashingaidze, Kingstone; Shanahan, Paul

doi:10.1007/s10681-012-0814-x

Cited by 8 publications

(4 citation statements)

References 31 publications

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“…Sunflower, being a highly cross-pollinated crop, is ideally suited for the exploitation of heterosis. A breeding program generally aims at developing cultivars with high grain yield and oil yield potential [13]. Consequently, there have been relatively fewer efforts to diversify the inbreds to get better heterosis over check hybrids.…”

Section: Introductionmentioning

confidence: 99%

Heterotic Effect of Different Cytoplasmic Combinations in Sunflower Hybrids Cultivated Under Diverse Irrigation Regimes

Tyagi

Dhillon

Kaur

et al. 2020

Plants

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The sunflower hybrids hold a narrow cytoplasmic diversity. Besides, the heterotic effect of wild cytoplasmic combinations of sunflower on important traits under water stress has not been explored in detail. Here, we evaluated the different sunflower cytoplasmic combinations in sunflower hybrids using cytoplasmic male sterile (CMS) sources as female parents. We used a total of sixteen sunflower genotypes representing twelve CMS lines from wild and conventional sources along with four restorer lines. Twelve CMS lines were crossed with four restorer lines to develop a total of 48 F1 hybrid combinations. The hybrids were evaluated under two different environments (i.e., regular irrigation and water stress) for morphophysiological, yield, and biochemical traits over two years. Heterotic effect for various CMS sources was evaluated on all of the three possible scales, namely, better-parent heterosis (BPH), mid-parent heterosis (MPH), and heterosis as percent of check (PSH-996). For better-parent and mid-parent heterosis, the CMS sources Helianthus annuus, Helianthus argophyllus, and Helianthus debilis demonstrated positive better-parent heterosis for seed yield, oil content, and oleic acid irrespective of the environment. However, the hybrid combinations of different sources when using the genotype RCR8297 as the restorer parent recorded maximum average returns. Furthermore, chlorophyll meter (SPAD) reading positively correlated with days to 50% flowering, days to maturity, plant height, and number of leaves per plant in both the environments. Overall, this study identified and compared the heterotic effect of the different cytoplasmic combinations in sunflower under water stress as well as under normal irrigation environments.

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Section: Introductionmentioning

confidence: 99%

Heterotic Effect of Different Cytoplasmic Combinations in Sunflower Hybrids Cultivated Under Diverse Irrigation Regimes

Tyagi

Dhillon

Kaur

et al. 2020

Plants

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“…The genetic basis of high morphological variability resulting in branching of sunflower is not fully understood (Sandu et al , ). Seed oil content which is an important selection criterion in the improvement of sunflower varies among cultivars (Lopez et al , ; Leon et al , ; Chigeza et al , ) and is affected by the amount of solar radiation intercepted by the cultivar (Dosio et al , ; Aguirrezábal et al , ), temperature (Rondanini et al , ; Khan et al ., ), sowing date, genotype, and their interactions (de la Vega & Hall, 2002 a , b ; Aslam et al , ; Lawal et al , ), plant density (Barros et al , ; Zarea et al , ) and foliar application of molybdenum at V‐4, four developed leaves stage (Skarpa et al , ). Oil content in sunflower is a function of the maternal plant genotype and not by kernel genotype (Thompson et al , ).…”

Section: Introductionmentioning

confidence: 99%

Seed yield, head characteristics and oil content in sunflower varieties as influenced by seeds from single and multiple headed plants under humid tropical conditions

Olowe

Folarin

Adeniregun

et al. 2013

Annals of Applied Biology

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Field trials were conducted during 2004 and 2005 to determine the effect of sowing seeds from plants with multiple heads and seeds from single headed plants of sunflower on seed yield, head characteristics and oil content of three widely grown open pollinated varieties (Funtua, Record and Isaanka) in the humid forest -savanna transition zone which is outside the current growing areas with a view to improving stability and sunflower productivity in this region. Seeds from multiple headed plants produced plants that flowered and matured 2-3 days later than plants from single headed plants. Apart from days to flowering in 2004, number of days to maturity and plant height were affected independently by variety and seed source factors. However, the seeds from single headed plants produced plants that recorded significantly (P < 0.01) higher head weight, head diameter, achene weight and number per head than plants from seeds of plants with multiple heads. Seed source had little effect on sunflower seed yield and oil content. However, Funtua produced significantly (P < 0.05) high seed yield (1956.0 kg ha −1 ± 76.06) when seeds from plants with multiple heads were sown, while Isaanka recorded comparatively high seed yield from seeds of plants from either multiple (1221.0 kg ha −1 ± 165.90) or single heads (1388.0 kg ha −1 ± 135.84) and Record (1201.0 kg ha −1 ± 96.97) when seeds from single headed plants were sown. Therefore, it is recommended that prospective sunflower growers who wish to cultivate Isaanka, can sow seeds from either the multiple or single head and preferably the multiple head for Funtua, and single head for Record.

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“…Therefore, direct selection for high-yield potential was less feasible under heat stress (de la Vega & Hall 2002). Chigeza et al (2013) noticed medium to high heritability and genetic advance for achene yield under non-stress condition. High achene yield potential was positively related with larger head diameter, low hull content, and percentage oil content under non-stress conditions (Kaya et al 2009) showing that direct selection for seed yield was possible under non-stress conditions.…”

Section: Achene Yield As a Criterion Of Direct Selection And Handlingmentioning

confidence: 99%

Handling sunflower (Helianthus annuusL.) populations under heat stress

Kalyar

Rauf

Silva

et al. 2013

Archives of Agronomy and Soil Science

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Sustainable sunflower yield is under threat by a significant rise in global temperatures. Therefore, the development of a heat-resistant sunflower breeding population or hybrid is important for sustainable yield under high temperatures. Although there are a significant number of studies aimed at understanding the mechanism of heat resistance, only few direct approaches were made to improve heat resistance in sunflower. When breeding for heat resistance, the selection criteria are important. A desirable screening criterion should be rapid, highly heritable, and allow for the discrimination of resistant and susceptible ecotypes before reproductive maturity so that undesirable plants can be eliminated. In contrast, destructive selection criteria are not applicable for a segregating population. On the basis of an extensive review of data and experimentation, traits such as leaf and head orientation at the time of anthesis are proposed for practical utilization of sunflower heat-resistant breeding. These traits could be utilized as markers linked with heat avoidance. The traits are simply inherited, non-destructive, non-laborious, and show no impact of the environment and are independent of genotype × environment.

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Advanced cycle pedigree breeding in sunflower. I: Genetic variability and testcross hybrid performance for seed yield and other agronomic traits

Cited by 8 publications

References 31 publications

Heterotic Effect of Different Cytoplasmic Combinations in Sunflower Hybrids Cultivated Under Diverse Irrigation Regimes

Heterotic Effect of Different Cytoplasmic Combinations in Sunflower Hybrids Cultivated Under Diverse Irrigation Regimes

Seed yield, head characteristics and oil content in sunflower varieties as influenced by seeds from single and multiple headed plants under humid tropical conditions

Handling sunflower (Helianthus annuusL.) populations under heat stress

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