The Growth of the Stem Tip of Kalanchoe cv. 'Brilliant Star'

Stein, Diana B.; Stein, Otto L.

doi:10.2307/2439047

Cited by 18 publications

(16 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The length of the plastochron in privet is approximately 3 days during vigorous vegetative growth. This value is comparable to the plastochron reported for Lonicera (Edgar, 1961) and for Kalanchoe (Stein and Stein, 1960). Since the apical initials divide once for every four nodes and each node takes 3 days to be formed, the initials would divide on the average of once in 12 days.…”

Section: Discussion-supporting

confidence: 84%

Determination of Number and Mitotic Activity of Shoot Apical Initial Cells by Analysis of Mericlinal Chimeras

Stewart

Dermen

1970

American J of Botany

110

View full text Add to dashboard Cite

A B S T RAe TThe dimensions of mericlinal sectors in periclinal chimeras resulting from replacement-displacement phenomena have been used to determine the number of shoot apical initial cells and their mitotic activity. Narrow sectors were always short, extending an average of less than three nodes. All long sectors were wide, involving 3i or Y2 of the circumference of the stem. These observations define the origin of all primary growth as from 1-3 apical initial cells in each of the apical layers. The sectors reveal a surprising stability of cellular position at the center of growth, with a specific initial cell maintaining its position during formation of over 100 nodes. During vigorous vegetative growth of Ligustrum ovalifolium the initials themselves divide only about once in 12 days during the formation of three nodes. The mitotic index of the initials in privet shoot apices is 1.4, and this rate of division is sufficient for them to be the ultimate source of all cells composing the shoot.

show abstract

Section: Discussion-supporting

confidence: 84%

Determination of Number and Mitotic Activity of Shoot Apical Initial Cells by Analysis of Mericlinal Chimeras

Stewart

Dermen

1970

American J of Botany

110

View full text Add to dashboard Cite

show abstract

“…This value is comparable to the plastochron reported for Lonicera (Edgar, 1961) and for Kalanchoe (Stein and Stein, 1960). This value is comparable to the plastochron reported for Lonicera (Edgar, 1961) and for Kalanchoe (Stein and Stein, 1960).…”

supporting

confidence: 86%

Determination of Number and Mitotic Activity of Shoot Apical Initial Cells by Analysis of Mericlinal Chimeras

Stewart

Dermen

1970

American Journal of Botany

View full text Add to dashboard Cite

The dimensions of mericlinal sectors in periclinal chimeras resulting from replacement‐displacement phenomena have been used to determine the number of shoot apical initial cells and their mitotic activity. Narrow sectors were always short, extending an average of less than three nodes. All long sectors were wide, involving 1/3 or 1/2 of the circumference of the stem. These observations define the origin of all primary growth as from 1–3 apical initial cells in each of the apical layers. The sectors reveal a surprising stability of cellular position at the center of growth, with a specific initial cell maintaining its position during formation of over 100 nodes. During vigorous vegetative growth of Ligustrum ovalifolium the initials themselves divide only about once in 12 days during the formation of three nodes. The mitotic index of the initials in privet shoot apices is 1.4, and this rate of division is sufficient for them to be the ultimate source of all cells composing the shoot.

show abstract

“…Ashby and Wangermann (1950) grew Ipomoea at different seasons and found that leaves were initiated faster in successive sowings but the rate did not change consistently with levels of leaf insertion from nodes 1-9. Stein and Stein (1960) found that Kalanchoe leaves were produced at a conslant rale. In Chrysanthemum temperature affected rate of leaf unfolding bul not the rate at which leaves were formed (Schwabe 1957).…”

Section: Introductionmentioning

confidence: 99%

Internal Control of Rate of Leaf Production in Sngar Beet

Humphries

1966

Physiologia Plantarum

View full text Add to dashboard Cite

The theory that the rate at which leaves appear is little affected by the current environment has been tested with sugar‐beet plants. Seedlings were raised vinder 4 different conditions, viz., 8 hour photoperiod 20°C, 16 hour photoperiod 20°, continuous light or in the glasshouse. After 2 weeks all were put in the glasshouse under the same growing conditions. The treatments wbich the seedlings received continued to affect the rate at which leaves were produced during the next 20 weeks.

show abstract

The Growth of the Stem Tip of Kalanchoe cv. 'Brilliant Star'

Cited by 18 publications

References 0 publications

Determination of Number and Mitotic Activity of Shoot Apical Initial Cells by Analysis of Mericlinal Chimeras

Determination of Number and Mitotic Activity of Shoot Apical Initial Cells by Analysis of Mericlinal Chimeras

Determination of Number and Mitotic Activity of Shoot Apical Initial Cells by Analysis of Mericlinal Chimeras

Internal Control of Rate of Leaf Production in Sngar Beet

Contact Info

Product

Resources

About