Leaves 26 cm long, linear, at least the uppermost with 1 or 2 pairs of linear. Chi-square vale 11. Stems erect, simple or branched, 1050 cm. The expected F2 phenotypic ratio of monohybrid cross is 3/4 (dominant phenotype) : 1/4 (recessive phenotype). You can place your plants atop a tray filled with water and pebbles or use a humidifier. The goal should be a 60 humidity level throughout the year. While many previous studies have provided evidence for pollinator preference playing a role in floral color polymorphism, the results of the current study indicate that reproductive assurance, which would be important for fluctuations in pollinator abundance or colonizing new areas, may act as a selective agent to maintain such polymorphisms. Answer 1 Answer: Based on the F2 phenotypic ratio, red color may be considered as the dominant phenotype and yellow color may be considered as recessive phenotype. As with most indoor plants, Crotons love moisture in the air - the wetter, the better.
The inflorescence is yellow to yellow-orange with lanceolate to ovate bracts. Overall, though, the plants are so similar that Intermountain Flora states, Castilleja occidentalis. An extremely rare plant, Christs Indian Paintbrush (Castilleja christii). The apparent trade-offs between a higher reproductive output in the scarlet morph and a reproductive assurance advantage in the yellow morph may explain the maintenance of the polymorphism in C. Castilleja occidentalis (Western Yellow Paintbrush). When pollinators were excluded, the yellow morph outperformed the scarlet morph in fruit set and seed set. When the scarlet morph was the maternal plant it had higher seed set. Both color morphs were used as pollen donors for the within and between crosses. The hand-pollination treatments were either self-pollination or cross pollination using pollen from within and between populations.
Paintbrush comes in white color, magenta, purple, deep red, pale orange, and yellow, too. Indian Paintbrush is listed as endangered in some states and as extinct in Maine, New Hampshire, Massachusetts, Delaware, and Louisiana. coccinea by conducting hand-pollination experiments in two nearby populations, one predominantly yellow and one predominantly scarlet. The plants, uppermost leaves display dazzling colors. We investigated a possible mechanism for this maintenance of bract color polymorphism in C. zion, paintbrush, plant, castilleja, scabrida, growing, rock. we see actually are the bracts growing over the small yellow-green flower. paintbrush, plant, castilleja scabrida, red leaf, flowers, rocks, leaves. Populations of scarlet Indian paintbrush (Castilleja coccinea) in the Midwestern United States exhibit a bract color polymorphism, with each population having predominantly yellow or scarlet bracts. Desert Paintbrush, Castilleja angustifolia, tends to be one of the first.
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