Effect of Ca on composition of fat body of peanut seed

Inanaga, Shunji; Arima, Eriko; Nishihara, T.

doi:10.1007/bf02851914

Cited by 7 publications

(2 citation statements)

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“…Calcium also increased significantly the pod yield (Saran, 1989). Moreover, (Inanaga et al, 1990) found that many immature seeds were produced in soil poor in Ca, and that seed weight may depend on the quantity of Ca absorbed through the shell. To obtain fill seed, the soil must be sufficient rich in Ca during growth of the fruit.…”

Section: Discussionmentioning

confidence: 99%

Alleviation of the Damage of Faba Bean Chocolate Spot and Rust Diseases by Some Nutritional Elements

El-Hai

El-Metwally

El-Baz

2007

Journal of Plant Production

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Laboratory and filed experiments were conducted in 2005/2006 and 2006/2007 winter seasons to study the effect of some nutritional elements (ferrous, zinc, manganese and calcium) at 2, 4, 6 and 8 g/L on chocolate spot and rust diseases of faba bean. The laboratory results, declared that zinc and manganese at 6 g/L completely inhibited the linear growth and sporulation as well as mycelial dry weight of Botrytis fabae. However, ferrous at 2 g/L or calcium at 8 g/l has no effect on neither linear growth nor mycelial dry weight.The results of field experiment show that calcium at 6 g/L led to maximum reduction of chocolate spot and rust diseases severity followed by manganese at 4 g/L then zinc at 4 g/L. The highest value of plant height occurred under zinc at 4 g/L followed by 6 g/L calcium which increased significantly number of branches/plant. There was positive relationship between number of pods/plant and calcium levels treatment from 2-6 g/L. Calcium at 6 g/L and 4 g/L gave the highest values of 100seed weight followed by manganese 4 g/L.Total phenol contents reached their maximum when faba bean sprayed with 2 or 4 g/L calcium followed by ferrous (6 g/L) then manganese (6 g/L). Also, the highest concentrates of chlorophyll a, b and caroteinoids occurred under the application of calcium at 2 g/L.It is clear from this study that there is no significant differences between the efficacy of calcium at 4 or 6 g/L and Diathine M-45 also between manganese (4 g/L) or calcium (6 g/L) and Plantvax 20% EC effects in reducing faba bean chocolate spot and rust diseases, respectively.In general, some of nutritional elements are promising trend in controlling of chocolate spot and rust diseases of faba bean, where it decreased the infection, environmental friendly and coast effective compared with the ordinary fungicides.

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Section: Discussionmentioning

confidence: 99%

Alleviation of the Damage of Faba Bean Chocolate Spot and Rust Diseases by Some Nutritional Elements

El-Hai

El-Metwally

El-Baz

2007

Journal of Plant Production

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“…In the peanut seed, which contains about 50% lipid by weight, the production of smaller seeds induced by irradiation with light may be due to the decrease of the rates of production of lipids, the synthesis of which may be regulated by light. It was reported that a deficiency of Ca 2+ ion in soil, as well as light irradiation, resulted in smaller seeds, with lower TG and PL contents, and increased contents of sugar, DG and FA (Inanaga et al 1988(Inanaga et al , 1990. However, there may be differences between the mechanisms controlling the reduction of the accumulation of lipids by the irradiation of fruit with light and by Ca2+-deficiency in the soil because no differences in the PL content were caused by light irradiation while the PL contents decreased by Ca2 § -ciency.…”

Section: Methodsmentioning

confidence: 99%

The Effect of Light on the Accumulation of Lipids in Seeds

Inanaga

Yanagigawa

Naka

et al. 1996

Soil Science and Plant Nutrition

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To investigate the effects of light on the accumulation of lipids in seeds, fruits of both peanut and soybean plants were allowed to grow under different types of light conditions (natural, red, blue, green, or far-red light) and in darkness. Irradiation with each type of light from the 20th or 30th day, except for green light from the 30th day, resulted in lower dry weight of peanut seeds. The peanut seeds irradiated with natural, blue or far-red light from the 30th day onward contained a smaller amount of lipids, lower levels of triacylglycerides (TG), and higher levels of total sugar and diacylglycerides (DG), than the seeds grown in darkness. In the case of soybean seeds grown in darkness, the lipid content increased, but the total sugar and protein contents decreased. Exposure of soybean seeds to far-red light did not result in an increase in the lipid content. In vitro, 14C-glycerol-3-phosphate was converted to DG rather than to TG under irradiation with light compared with dark conditions. In contrast, the effect of light on the incorporation of 14C-oleoyl-CoA into TG was not appreciable. These findings suggest that the accumulation of lipid in the seeds of leguminous plants is depressed by light, with far-red light affecting most the accumulation of lipids, which may regulate the synthesis of TG via DG from glycerol-3-phosphate.

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