Mandevilla Plant Named ‘TVMD1573’

Botanical designation: Mandevilla sanderi. Cultivar denomination: ‘TVMD1573’.

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct cultivar of Mandevilla plant, botanically known as Mandevilla sanderi , and hereinafter referred to by the name ‘TVMD1573’. The new Mandevilla plant is a product of a planned breeding program conducted by the Inventor in Sao Paulo, Brazil. The objective of the breeding program is to develop new compact and freely flowering Mandevilla plants with large flowers and good garden performance. The new Mandevilla plant originated from a cross-pollination in September 2021 in Sao Paulo, Brazil of a proprietary selection of Mandevilla sanderi identified as code number TVMD1141, not patented, as the female, or seed, parent with a proprietary selection of Mandevilla sanderi identified as code number TVMD1027, not patented, as the male, or pollen, parent. The new Mandevilla plant was discovered and selected by the Inventor as a single flowering plant from within the progeny of the stated cross-pollination grown in a controlled greenhouse environment in Sao Paulo, Brazil in July 2023. Asexual reproduction of the new Mandevilla plant by terminal stem cuttings in a controlled environment in Sao Paulo, Brazil since July 2023 has shown that the unique features of this new Mandevilla plant are stable and reproduced true to type in successive generations.

SUMMARY OF THE INVENTION

Plants of the new Mandevilla have not been observed under all possible combinations of environmental conditions and cultural practices. The phenotype may vary somewhat with variations in environmental conditions such as temperature and light intensity, without, however, any variance in genotype. The following traits have been repeatedly observed and are determined to be the unique characteristics of ‘TVMD1573’. These characteristics in combination distinguish ‘TVMD1573’ as a new and distinct Mandevilla plant: 1. Upright to outwardly spreading plant habit. 2. Moderately vigorous to vigorous growth habit. 3. Early and freely flowering habit. 4. Yellow to light orange-colored flowers with reddish orange- colored throats. 5. Good container and garden performance. Plants of the new Mandevilla can be compared to plants of the female parent selection. Plants of the new Mandevilla differ primarily from plants of the female parent selection in the following characteristics: 1. Flowers of plants of the new Mandevilla are larger than flowers of plants of the female parent selection. 2. Flowers of plants of the new Mandevilla are yellow to light orange in color whereas flowers of plants of the female parent selection are bright orange in color. Plants of the new Mandevilla can be compared to plants of the male parent selection. Plants of the new Mandevilla differ primarily from plants of the male parent selection in the following characteristics: 1. Flowers of plants of the new Mandevilla are smaller than flowers of plants of the male parent selection. 2. Flowers of plants of the new Mandevilla are yellow to light orange in color whereas flowers of plants of the male parent selection are bright yellow in color. Plants of the new Mandevilla can also be compared to plants of Mandevilla hybrida ‘Sunpapri’, disclosed in U.S. Plant Pat. No. 28,277. In side-by-side comparisons, plants of the new Mandevilla differ primarily from plants ‘Sunpapri’ in the following characteristics: 1. Plants of the new Mandevilla have smaller flowers than plants of ‘Sunpapri’. 2. Plants of the new Mandevilla have yellow to light orange-colored flowers whereas plants of ‘Sunpapri’ have light to pale orange-colored flowers. BRIEF DESCRIPTION OF THE PHOTOGRAPH The accompanying colored photograph illustrates the overall appearance of the new Mandevilla plant showing the colors as true as it is reasonably possible to obtain in colored reproductions of this type. Colors in the photograph may differ slightly from the color values cited in the detailed botanical description which accurately describe the actual colors of the new Mandevilla plant. The photograph is a side perspective view of a typical flowering plant of ‘TVMD1573’ grown in a container. DETAILED BOTANICAL DESCRIPTION The aforementioned photograph and following observations, measurements and values describe plants grown in July in 15-cm containers in a polyethylene-covered greenhouse in Sao Paulo, Brazil and under cultural practices typical of commercial Mandevilla production. During the production of the plants, day temperatures ranged from 20° C. to 35° C. and night temperatures ranged from 10° C. to 20° C. Plants were pinched three times: four weeks, six weeks and eight weeks after planting. Plants were 33 weeks old when the photograph and description were taken. In the following description, color references are made to The Royal Horticultural Society Colour Chart, 2015 Edition, except where general terms of ordinary dictionary significance are used. Botanical classification: Mandevilla sanderi ‘TVMD1573’. Parentage: Female, or seed, parent .—Proprietary selection of Mandevilla sanderi identified as code number TVMD1141, not patented. Male, or pollen, parent .—Proprietary selection of Mandevilla sanderi identified as code number TVMD1027, not patented. Propagation: Type .—By vegetative cuttings. Time to initiate roots, summer .—About three weeks at temperatures about 20° C. to 35° C. Time to initiate roots, winter .—About three weeks at temperatures about 20° C. to 25° C. Time to produce a rooted young plant, summer .—About 20 to 25 days at temperatures about 20° C. to 35° C. Time to produce a rooted young plant, winter .—About 25 to 30 days at temperature about 20° C. to 25° C. Root description .—Thick, fleshy; typically white in color, actual color of the roots is dependent on substrate composition, water quality, fertilizers, substrate temperature and physiological age of roots. Rooting habit .—Low branching; medium density. Plant description: Plant and growth habit .—Upright to outwardly plant habit; roughly broadly obovate in overall shape; moderately vigorous to vigorous growth habit and moderate to rapid growth rate. Plant height, soil level to top of foliar plane .—About 30 cm. Plant height, soil level to top of floral plane .—About 35 cm. Plant diameter ( spread ).—About 20 cm. Lateral branch description .—Branching habit: Moderate branching habit, typically about two primary lateral branches each with about two secondary lateral branches. Length: About 17 cm. Diameter: About 2.6 mm. Internode length: About 2.1 cm. Aspect: Primary lateral branches, mostly upright; secondary lateral branches, about 30° from primary branch axis. Strength: Strong. Texture and luster: Smooth, glabrous; semi-glossy; becoming woody with development. Color, developing: Close to 143C. Color, developed: Close to 143B; when woody, close to 199B. Leaf description: Arrangement .—Opposite, simple. Length .—About 6 cm. Width .—About 3.3 cm. Shape .—Obovate. Apex .—Abruptly acuminate. Base .—Rounded. Margin .—Entire; not lobed. Texture and luster, upper and lower surfaces .—Smooth, glabrous; moderately coriaceous; semi-glossy. Venation pattern .—Pinnate. Color .—Developing leaves, upper surface: Close to 144A. Developing leaves, lower surface: Close to 139D. Fully expanded leaves, upper surface: Close to 139A; venation, close to 144A. Fully expanded leaves, lower surface: Close to 138A; venation, close to 144B. Petioles .—Length: About 1.4 cm. Diameter: About 2 mm. Strength: Moderately strong. Texture and luster, upper and lower surfaces: Smooth, glabrous; slightly glossy. Color, upper surface: Close to 144A. Color, lower surface: Close to 144B. Flower description: Flower type and flowering habit .—Single salverform flowers arranged in terminal and axillary cymes; flowers face mostly upright to outwardly; freely flowering habit with about three fully open flowers per inflorescence and about 65 flower buds and open flowers developing per plant. Natural flowering season .—Plants flower continuously year-round in Brazil; plants begin flowering about 25 weeks after planting rooted young plants. Flower longevity on the plant .—Individual flowers last about ten days; flowers not persistent. Fragrance .—None detected. Inflorescence height .—About 10.5 cm. Inflorescence diameter .—About 9.5 cm. Flower buds .—Length: About 4.5 cm. Diameter: About 1 cm. Shape: Lanceolate. Texture and luster: Smooth, glabrous; slightly glossy. Color: Close to 10B; towards the apex, close to 11A and towards the base, close to 150C. Flowers .—Appearance: Flared trumpet, corolla fused and five-parted. Diameter: About 7 cm by 7 cm. Depth (length): About 4 cm. Throat diameter: About 9 mm. Tube length: About 1.5 cm. Tube diameter: About 3 mm. Corolla .—Quantity and arrangement: Five petals arranged in a single whorl; lower 50% portion of the petals are fused into a funnelform tube. Petal length: About 3.5 cm. Petal width: About 3 cm. Petal shape and appearance: Unequal and asymmetric; roughly spatulate; slightly convex. Petal apex: Acute. Petal margin: Entire; slightly undulate. Petal texture and luster, upper and lower surfaces: Smooth, glabrous; slightly glossy. Throat texture: Smooth, glabrous. Tube texture: Smooth, glabrous. Color: Petal, when opening, upper surface: Close to 12A. Petal, when opening, lower surface: Close to 11B. Petal, fully opened, upper surface: Close to 10A and 19B; towards the throat, close to N30A to N30B; venation, close to 39C and 40A; color does not change with subsequent development. Petal, fully opened, lower surface: Close to 23C; venation, close to 39C; color does not change with subsequent development. Throat: Distally, close to N30A to N30B and proximally, close to 17B; stripes, close to 26B; venation, close to N30A. Tube: Distally, close to 29B fading to close to 14C; proximally, close to 154C; venation, similar to lamina colors. Sepals .—Quantity and arrangement: Five sepals arranged in a single whorl. Length: About 6 mm. Width: About 2 mm. Shape: Lanceolate. Apex: Narrowly acuminate. Base: Broadly cuneate and fused. Margin: Entire. Texture and luster, upper surface: Smooth, glabrous; slightly glossy. Texture and luster, lower surface: Smooth, glabrous; matte. Color: When developing, upper and lower surfaces: Close to 145B. Fully developed, upper and lower surfaces: Close to 145B. Peduncles .—Length: About 3.5 cm. Diameter: About 2 mm. Strength: Strong. Aspect: About 85° from lateral branch axis. Texture and luster: Smooth, glabrous; moderately glossy. Color: Close to 143B. Pedicels .—Length: About 1.4 cm. Diameter: About 2 mm. Strength: Strong. Aspect: About 85° from peduncle axis. Texture and luster: Smooth, glabrous; moderately glossy. Color: Close to 145A. Reproductive organs .—Stamens: Quantity and arrangement: Typically five; basifixed; anthers connivent. Filament length: About 2 mm. Filament color: Close to 145B. Anther shape: Narrowly sagittate. Anther size: About 3 mm by 10 mm. Anther color: Close to 160B. Pollen amount: Moderate. Pollen color: Close to 155B. Pistils: Quantity: Typically one. Pistil length: About 2.6 cm. Style length: About 2 cm. Style color: Close to 145D. Stigma diameter: About 1.6 mm. Stigma shape: Club-shaped, pointed. Stigma color: Close to 145D. Ovary color: Close to 145B. Seeds and fruits .—To date, seed and fruit production have not been observed on plants of the new Mandevilla. Pathogen & pest resistance: To date, plants of the new Mandevilla have not been noted to be resistant to pathogens and pests common to Mandevilla plants. Temperature tolerance: Plants of the new Mandevilla have been observed to tolerate temperatures ranging from about 5° C. to about 40° C. and to be suitable for USDA Hardiness Zones 9 to 13.