Germination and Seedling Growth in Primed Seeds of Sunflower under Water Stress

Fatemi, Seyed Nabiladdin

doi:10.9734/arrb/2014/9971

Cited by 13 publications

(7 citation statements)

References 28 publications

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“…Overall, drought stress affects all aspects of sunflower growth and development. In start, water deficiency stress decreases germination, stem elongation and leaf area [ 26 , 27 ] and at reproductive stage, it results in pollen abortion resulting in empty acene [ 29 – 31 ].…”

Section: Discussionmentioning

confidence: 99%

Conservation tillage improves productivity of sunflower (Helianthus annuus L.) under reduced irrigation on sandy loam soil

Sher

Arfat²,

Ul‐Allah³

et al. 2021

PLoS ONE

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Sunflower production is significantly lower in arid and semi-arid regions due to various crop management problem. Conservation of tillage provides the most excellent opportunity to reduce degradation of soil reserves and increase soil productivity. The main objective of this study was to investigate the combined effects of conservation tillage and drought stress on growth and productivity of different sunflower hybrids. Experimental treatments included two sunflower hybrids (‘NK-Senji’ and ‘S-278’), two drought stress treatments (i.e., well-watered and drought stress at flowering and grain filling stages) and three tillage practices (i.e., conservation, minimum and deep tillage). The results indicated that morphological and physiological parameters, and yield-related traits were significantly (P≤0.05) affected by all individual factors; however, their interactive effects were non-significant. Among sunflower hybrids, ‘NK-Senji’ performed better for morphological, physiological, and yield-related traits than ‘S-278’. Similarly, conservation tillage observed better traits compared to the rest of the tillage practices included in the study. Nonetheless, conservation tillage improved growth and yield-related traits of hybrid ‘NK-Senji’ under drought stress. Hence, it is concluded that conservation tillage can improve the productivity of sunflower under low moisture availability. Therefore, conservation tillage could be suggested in the areas of lower water ability to improve sunflower production. Nonetheless, sunflower hybrids or varieties need thorough testing for their adaptability to conservation tillage and low moisture availability before making recommendations.

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Section: Discussionmentioning

confidence: 99%

Conservation tillage improves productivity of sunflower (Helianthus annuus L.) under reduced irrigation on sandy loam soil

Sher

Arfat²,

Ul‐Allah³

et al. 2021

PLoS ONE

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“…Similarly, García-López et al (2014) reported different yield responses of sunflower to various irrigation regimes and water stress, especially when irrigation water was reduced to 60% of optimal irrigation. In addition, Fatemi (2014) reported pollen infertility and reduced carbon assimilation due to water stress conditions. In this study, sunflower yield reduction was also affected by physiological and morphological attributes, indeed the content of H2O2 and MDA shows negative relationships with total biomass, achene yield and its quality parameters.…”

Section: Articlementioning

confidence: 99%

Agronomic response of sunflower subjected to biochar and arbuscular mycorrhizal fungi application under drought conditions

et al. 2022

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There is growing interest in developing environment-friendly farming practices that can limit the impact of drought stress in agriculture. The main objective of this study was to investigate the combined effects of biochar and arbuscular mycorrhizal fungi (AMF) on the agronomic responses of sunflower. Field experiments were conducted in the 2018 and 2019 growing seasons in semi-arid environments of Iran. The following treatments were adopted: i) three levels of biochar [0, 2.5 and 5 t ha–1 of biochar called Bl, Bm and Bh, respectively]; and ii) three irrigation levels (50, 30 and 10% of the maximum available water (MAW) called 50MAW, 30MAW and 10MAW, respectively)]; iii) two levels of AMF inoculation (with and without the addition of AMF called +AMF and –AMF, respectively). The experimental design was a randomized complete block design. At flowering, the leaf area index (LAI) was generally higher in the plants subjected to Bh-+AMF (on average 4.95), even if the LAI values changed according to biochar application (Bh > Bm > Bl) and the level of irrigation (50MAW > 30MAW > 10MAW). At harvesting, sunflower seed yield was highest in +AMF and in Bh (on average 53.9 and 51.2 g plants–1, respectively). Sunflower plants subjected to Bh-+AMF showed the highest seed yield under all irrigation levels (79.4, 57.1 and 32.3 g plant–1 in 50MAW, 30MAW and 10MAW, respectively). The application of biochar combined with AMF resulted in an increase in agronomic responses compared to untreated plants (Bl- –AMF) such as root biomass (+15%), stem diameter (+12%), plant height (+5%) and head diameter (+15%). Seed protein was higher in +AMF than –AMF (on average 20.7 vs 17.2 g m–2, respectively) and in Bh and Bm compared with Bl (on average 19.4 vs 18.2 g m–2, respectively). The oil content of seeds was affected by biochar application and AMF inoculation, especially under 50MAW and 30MAW irrigation levels; conversely, no differences were observed under the 10MAW irrigation level. Sunflower yield characteristics were positively correlated to the net photosynthesis rate and negatively affected by hydrogen peroxide and malondialdehyde content. The results showed that the adoption of biochar and AMF may represent as a successful strategy to balance crop productivity in a semi-arid environment. Although further research is required for a better understanding of the irrigation and fertilization schedule, these preliminary results could be extended to other crops which have similar requirements to sunflower. Highlights - The combined effects of biochar and arbuscular mycorrhizal fungi on sunflower are studied. - Biochar application and mycorrhiza inoculation improved plant performance. - Biochar and AMF positively affected the net photosynthesis rate of sunflower plants. - The adoption of biochar and AMF may mitigate the effect of drought conditions. - Biochar and AMF can support sunflower cultivation.

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“…While, unprimed seeds gave minimum seedling vigor of 2460.32 being significantly inferior to those recorded under different methods of seed priming. The reason of poor seed vigour of unprimed seed may be due to slower rate of imbibition (Fatemi, 2014). Hydro-priming of maize seeds stand next to bio-priming in respect to seedling vigor index.…”

Section: Seedling Vigor Indexmentioning

confidence: 99%

Studies on germination and seedling development of winter maize (Zea mays L.) as influenced by various seed priming methods

Bholane¹,

Rajput²,

Tomar³

2021

IJAS

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A field experiment was conducted for boosting the productivity of kharif sweet corn (Zea mays Saccharata) at Agronomy Farm,RCSM College of Agriculture, Kolhapur (M.S.), India during kharif, 2020 in black Vertisolsoil using split plot design with four replications and two factors, where main plot factors consist of time of application viz T1:15 days after sowing (DAS), T2: 30 DAS and T3: 45 DAS and sub plot factors consist of levels of nano nitrogen (N) fertilizers vizN1: 1.00 L ha-1, N2: 1.25 L ha-1 and N3:1.50 L ha-1. The results showed that at harvest, maximum plant height (183.41 cm), number of leaves (8.86 plant-1), leaf area (58.40 dm2plant-1), dry matter accumulation (117.18 gplant-1), length of cob (18.55 cm), diameter of cob (16.83 cm), weight of cob per plant (208.65 g), number of grains (371.25 cob-1), green cob yield (125.96 q ha-1), green fodder yield (344.39 q ha-1), total uptake plant in total ((264, 98 and 230 kg ha-1),yield of protein by grain (92.89 g kg-1) and stover (50.96 g kg-1) were obtained from treatment N3 (1.5 L ha-1) which was on par with treatment N2 (1.25 L ha-1) and significantly superior over N1 (1 L ha-1). While main plot showed that at harvest plant height (191.90 cm), number of leaves(10.09plant-1), leaf area (62.63 dm2plant-1), dry matter accumulation (123.51 gplant-1), length of cob (20.56 cm), diameter of cob (19.71 cm), weight of cob (222.29 g plant-1), number of grains (402.07 cob-1), green cob yield (138.32q ha-1),stover yield (359.75q ha-1), total uptake(287, 113 and 262 kg ha-1), yield of protein by grain (97.36 g kg-1) and stover (51.77 g kg-1)were significantly maximum when foliar spray of NN was done at 15 (DAS). The foliar application at 15 DAS had taken minimum number of days to reach 50 per cent of tasselling (51.62 days) and silking (55.97 days).

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Germination and Seedling Growth in Primed Seeds of Sunflower under Water Stress

Cited by 13 publications

References 28 publications

Conservation tillage improves productivity of sunflower (Helianthus annuus L.) under reduced irrigation on sandy loam soil

Conservation tillage improves productivity of sunflower (Helianthus annuus L.) under reduced irrigation on sandy loam soil

Agronomic response of sunflower subjected to biochar and arbuscular mycorrhizal fungi application under drought conditions

Studies on germination and seedling development of winter maize (Zea mays L.) as influenced by various seed priming methods

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