Seed viability, seed germination, and micropropagation of Aconitum violaceum Jacq. ex Stapf—a rare and threatened medicinal plant of Ladakh Himalaya

Hadi, A. Hamid A.; Rafiq, Shah; Singh, Seema; Ali, Sajjad; Nawchoo, Irshad A.; Wagay, Nasir Aziz

doi:10.1007/s11627-023-10331-x

Cited by 2 publications

(3 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where n1 is the number of seeds germinated on day 1 of germination, n2 is the number of seeds germinated on day 2 and d is the number of days taken for seed germination (20,21).…”

Section: Seed Germinationmentioning

confidence: 99%

“…Peak value (PV) of seed germination PV = highest number of seeds germinated ÷ number of days (21) Germination energy (GE) Germination energy = peak value (PV)/mean daily germination (MDG)…”

Section: Seed Germinationmentioning

confidence: 99%

“…In species with underdeveloped embryos, the embryo length to seed length ratio (E:S) at the time of seed dispersal varies. Previously reported species with E:S ratios include Psychortia zeylanica (E:S= 0.36 ± 0.04), P. nigra (E:S = 0.43 ± 0.0), P. gardneri (E:S= 0.44 ± 0.07), Eremurus anisopterus (E:S= 0.73 ± 0.01), Gomphandra luzoniensis (0.36 ± 0.07) and Nothapodytes nimmoniana (0.74 ± 0) (21,27). Forbis reconstructed a phylogenetic tree based on the E:S ratio and found that the extant basal lineages (particularly within basal groups, including eumagnoliids, Illiciaceae, Schisandraceae, Austrobaileyaceae, Nymphaeaceae and Amborellaceae) have small embryos, reflecting the ancestral character of angiosperms.…”

Section: Seed Germinationmentioning

confidence: 99%

See 2 more Smart Citations

Epicotyl morphophysiological dormancy and a rare case of epigeal cryptocotylar seed germination in Goniothalamus wynaadensis (Bedd.) Bedd., a tropical threatened endemic tree species of the Western Ghats

Jayan,

Sreekala

2024

Plant Sci. Today

View full text Add to dashboard Cite

Goniothalamus wynaadensis (Bedd.) Bedd. is a threatened indigenous tree species found in the Western Ghats and possesses significant medicinal value. This species belongs to the primitive family Annonaceae. However, there is a lack of information regarding seed germination in this species. We conducted experiments on seed germination using various media and found that the species exhibits epicotyl morpho-physiological dormancy (eMPD), marking the first such record in Annonaceae. GA3 at a concentration of 500 ppm and warm stratification at 20 °C for one week proved effective in enhancing embryo growth and radicle emergence. The epicotyl emergence was observed only at 30±2 °C. Because warm stratification promotes both radicle and shoot emergence in G. wynaadensis, the level of eMPD is non-deep and simple. Hence, dormancy in G. wynaadensis can be described as C1b Bb (radicle)- C1b Bb (epicotyl); i.e., the embryo is underdeveloped and grows before radicle emergence and epicotyl emergence under warm temperatures (Bb) and both the radicle and epicotyl have non-deep simple physiological dormancy broken by warm temperatures (C1b). Consequently, G. wynaadensis seed dormancy is phenologically well- adapted to the seasonal climate of Wayanad. Additionally, the species was found to display epigeal cryptocotylar seed germination—a rare occurrence in the development of angiosperm seedlings and this is the first record of such a phenomenon in the genus Goniothalamus.

show abstract

“…where n1 is the number of seeds germinated on day 1 of germination, n2 is the number of seeds germinated on day 2 and d is the number of days taken for seed germination (20,21).…”

Section: Seed Germinationmentioning

confidence: 99%

Section: Seed Germinationmentioning

confidence: 99%

Section: Seed Germinationmentioning

confidence: 99%

See 1 more Smart Citation