Effects of Photoperiod and Nitrogen Supply on Growth and Reproduction in the Gherkin

Hall, Wayne C.

doi:10.1104/pp.24.4.753

Cited by 26 publications

(3 citation statements)

References 24 publications

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“…These results support the findings reported for both monoecious cucurbits (Dzhaparidze, 1976;Hall, 1949;Heslop-Harrison, 1972;Minina, 1938) as well as other plants such as Cannabis sativa (Tibeau, 1936), Spinacea oleracea (Laurent, 1903), Zea mays (Choudhri & Krishan, 1946;Minina, 1938).…”

Section: Discussionsupporting

confidence: 82%

Modification of sex expression in sponge gourd (Luffa cylindrica L.) roem by mineral nutrient treatments

Omini

Hossain

1987

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Effects of three major mineral nutrient elements, nitrogen, phosphorous and potassium, on sex expression in Luffa cy6ndrica (L.) Roem were investigated in relation to nodal location of the first male and the first female flower on the plant as well as the ratio of the male-female flowers, otherwise known as "sex ratio".Potassium-containing nutrient treatments (K, NK & PK) reduced the mean node number of the first staminate inflorescence but did not change the mean node number of the first pistillate flower. These treatments promoted staminate flowering and caused a shift towards maleness while nitrogen-and phosphorouscontaining nutrient treatments (N, P, NP & NPK) promoted pistillate flowering and reduced staminate flowering, causing a shift towards femaleness. These results are explained in terms of hormonal balance in the plant. The possible role of mineral nutrients in hormonal balance and thereby in sex expression is discussed.

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Section: Discussionsupporting

confidence: 82%

Modification of sex expression in sponge gourd (Luffa cylindrica L.) roem by mineral nutrient treatments

Omini

Hossain

1987

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“…Thompson (76) working with spinach, Tibeau (77) with hemp, and Sahlnin (64) with corn observed that high levels of nitrogen stimulated the production of pistillate flowers while low nitrogen levels favored stamlnate flower formation. Similar observations have been reported by Tied j ens (78) and Dearborn (18) for cucumbers ( Cucumis sativus ), by Hall (30) for gherkins ( Cucumis anguria ) f by Sabinin (64) and Minina (51) for cucumbers and watermelons, and by Brantley (11) for cantaloupes and watermelons.…”

Section: Effgc^s Qr Qualitysupporting

confidence: 84%

The influence of calcium on the growth, yield, quality, and chemical composition of watermelons, Citrullus vulgaris Schrad /

Waters¹

1960

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25. The effects of Calcium and nitrogen on the percentage of calcium, potassium, and magnesium in the leaves of young watermelon plants ...... 59 26. The effects of calcium and nitrogen on the percentage of calcium, potassium, and magnesium in the tips of mature watermelon plants • 62 27. The effects of Calcium and nitrogen on the percentage of calcium, potassium, and magnesium in the leaves of mature watermelon plants. .. . 63 28. The effects of calcium and nitrogen on the percentage of calcium, potassium, and magnesium in U. S, Number 1 watermelon fruits • 65 29. The effects of calcium and nitrogen on the percentage of calcium, potassium, and magnesium in watermelon fruits exhibiting blossom-end rot ,. 66 30. The average percentage of calcium, potassium, and magnesium associated with each calcium and each nitrogen level in both vines and fruits from the field experiment .... 80 31.

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“…The effect of the photoperiod is different on different parts of the plant and under different conditions. Hall (1949) grew gherkins under green-house conditions from seedling to maturity. At high nitrogen levels, plants given a 16-hour day had larger stems than those under 8 hours but at low nitrogen levels this was reversed and plants under the shorter days grew larger.…”

Section: Duration Of Lightmentioning

confidence: 99%

Plant morphogenesis

Sinnott¹

1960

255

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Biological organization is to be seen most distinctly in bodily development. It is obvious that, to produce an individual with a specific form and structure, growth must be more rapid in some directions than in others and must form tissues and organs of different character in different places. Embryology has shown how precisely the activities in one part of the developing individual are related to those in every other part. Few happenings in nature are as fascinating to watch as the unfolding and morphology. More commonly and properly, however, it includes, in addition to a discussion of purely descriptive facts as to the origin of form, a study of the results of experimentally controlled development and an analysis of the effects of the various factors, external and internal, that determine how the development of form proceeds. In other words, it attempts to get at the underlying formativeness in the development of organisms and especially to reach an understanding of the basic fact of which form is the most obvious manifestation-biological organization Workers with plants have a number of advantages, however. In plants, permanently embryonic regions, the meristems, are available for study. At the tip of shoot and root and in the cambial layers these are indeterminate and produce new plant structures almost indefinitely. Such meristems are usually numerous or extensive on the same plant so that ample material for the study of development, identical in genetic constitution, is available. Growth and differentiation in the development of a plant are thus continuing processes and not limited to a single and often brief life cycle.Organs such as leaves, flowers, and fruits, which are determinate in growth, pass through a cycle closely comparable to that of individual animals, and morphogenetic problems can also often profitably be studied in them. The fact that they are usually produced in abundance on a single plant is a further advantage, for here the investigator need not be concerned about genetic diversity in his material but can study strictly The Cellular Basis of Growth 33 structures such as tubers and fruits, the greater size is due to an increase in both the number and the size of their cells. Lehmann (1926) found a positive correlation between the size of a potato tuber and that of its cells. Since the increase in cell size was by no means proportional to that in tuber size, it was evident that large tubers have more as well as larger cells. The same relations are found in tomatoes (Houghtaling, 1935). A more detailed study of this problem, in large-fruited and small-fruited races of gourds, was made by Sinnott (1939; Fig. 3-4). Here cell size increases in the young ovary but much less rapidly than organ size, showing that cell division is taking place. During this period there is more increase in cell size in the larger races. The size at which the cells divide steadily increases. At about the time of flowering, however, division in most of the young fruit ceases, first in the central region and then prog...

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Effects of Photoperiod and Nitrogen Supply on Growth and Reproduction in the Gherkin

Cited by 26 publications

References 24 publications

Modification of sex expression in sponge gourd (Luffa cylindrica L.) roem by mineral nutrient treatments

Modification of sex expression in sponge gourd (Luffa cylindrica L.) roem by mineral nutrient treatments

The influence of calcium on the growth, yield, quality, and chemical composition of watermelons, Citrullus vulgaris Schrad /

Plant morphogenesis

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