Online citations, reference lists, and bibliographies.

Water Relations Of Seed Development And Germination In Muskmelon (Cucumis Melo L.) : III. Sensitivity Of Germination To Water Potential And Abscisic Acid During Development.

G. Welbaum, T. Tissaoui, K. Bradford
Published 1990 · Medicine, Biology

Cite This
Download PDF
Analyze on Scholarcy
Share
Muskmelon (Cucumis melo L.) seeds are germinable 15 to 20 days before fruit maturity and are held at relatively high water content within the fruit, yet little precocious germination is observed. To investigate two possible factors preventing precocious germination, the inhibitory effects of abscisic acid and osmoticum on muskmelon seed germination were determined throughout development. Seeds were harvested at 5-day intervals from 30 to 65 days after anthesis (DAA) and incubated either fresh or after drying on factorial combinations of 0, 1, 3.3, 10, or 33 micromolar abscisic acid (ABA) and 0, -0.2, -0.4, -0.6, or -0.8 megapascals polyethylene glycol 8000 solutions at 30 degrees C. Radicle emergence was scored at 12-hour intervals for 10 days. In the absence of ABA, the water potential (Psi) required to inhibit fresh seed germination by 50% decreased from -0.3 to -0.8 megapascals between 30 and 60 DAA. The Psi inside developing fruits was from 0.4 to 1.4 megapascals lower than that required for germination at all stages of development, indicating that the fruit Psi is sufficiently low to prevent precocious germination. At 0 megapascal, the ABA concentration required to inhibit germination by 50% was approximately 10 micromolar up to 50 DAA and increased to >33 micromolar thereafter. Dehydration improved subsequent germination of immature seeds in ABA or low Psi. There was a linear additive interaction between ABA and Psi such that 10 micromolar ABA or -0.5 megapascal osmotic potential resulted in equivalent, and additive, reductions in germination rate and percentage of mature seeds. Abscisic acid had no effect on embryo solute potential or water content, but increased the apparent minimum turgor required for germination. ABA and osmoticum appear to influence germination rates and percentages by reducing the embryo growth potential (turgor in excess of a minimum threshold turgor) but via different mechanisms. Abscisic acid apparently increases the minimum turgor threshold, while low Psi reduces turgor by reducing seed water content.



This paper is referenced by
10.1016/S1369-703X(00)00077-2
Viability of plant hairy roots is sustained without propagation in low sugar medium kept at ambient temperature.
Nagatome (2000)
10.1007/s11104-019-04335-z
Myxospermous seed-mucilage quantity correlates with environmental gradients indicative of water-deficit stress: Plantago species as a model
António Teixeira (2019)
The effect of priming on seedling emergence of differentially matured sorghum (Sorghum bicolor L.) seeds.
Abdolreza Haghpanah (2009)
10.20431/2349-0381.0507004
The Effects of Salinity and Light to the Seed Germination Ofmung Bean (Vigna Radiata L..)
Muhammad Jamhari (2018)
10.1017/SSR2006258
Using thermal time models to predict seedling emergence of orchardgrass ( Dactylis glomerata L.) under alternating temperature regimes
J. Qiu (2006)
10.6001/BIOLOGIJA.V63I2.3525
Factors influencing seed germination of the pastoral plant Retama raetam subsp. bovei (Fabaceae): interactive effects of fruit morphology, salinity, and osmotic stress
Kaouther Mechergui (2017)
Germinación de cuatro pastos bajo condiciones de estrés salino
M. Ruiz (2012)
10.1590/S0103-90162004000100019
Muskmelon seed priming in relation to seed vigor
W. M. Nascimento (2004)
10.3923/AJPS.2006.940.947
The Effect of Priming on Tomato Rootstock Seeds in Relation to Seedling Growth
K. Mavi (2006)
10.2135/CROPSCI2010.05.0285
Seed O2 Uptake and Germination of Cold‐Tolerant and Cold‐Intolerant Cultivars of Muskmelon
Menahem Edelstein (2011)
Seed development and acquisition of desiccation tolerance during maturation of okra seed
Jagadish Hosamani (2012)
10.1079/SSR2003150
A classification system for seed dormancy
J. M. Baskin (2004)
10.3923/AJPS.2007.1072.1079
Effects of Irrigation Regimes and Row Arrangement on Yield, Yield Components and Seed Quality of Pumpkin (Cucurbita pepo L.)
A. Ghanbari (2007)
10.1590/S1516-89132008000500004
Effect of salt and osmotic stresses on the germination of pepper seeds of different maturation stages
I. Demir (2008)
10.1079/SSR200182
Metabolic heat and CO 2 production rates during germination of melon (Cucumis melo L.) seeds measured by microcalorimetry
M. Edelstein (2001)
10.1590/S0100-204X1999000500015
Efeito da idade e do repouso pós-colheita de frutos de pepino na semente armazenada
C. Barbedo (1999)
10.1590/S0103-90162003000100011
Muskmelon seed germination and seedling development in response to seed priming
W. M. Nascimento (2003)
10.1016/J.PMPP.2007.03.001
Water uptake and proline index as indicators of predisposition in tomato plants to Phytophthora nicotianae infection as influenced by abiotic stresses
D. Grote (2006)
Evaluation of salinity tolerance of three canola cultivars at germination and early seedling growth stage
Janagard (2008)
10.15258/SST.2007.35.2.01
Tripsacum dactyloides (L.) L. caryopses water uptake dynamics and germination responses to giberellic acid, fluctuating temperatures and pericarp scarification
R. Huarte (2007)
10.5352/JLS.2007.17.8.1157
Cloning and Expression Analysis of a Grape asr gene, VlASR Containing a Promoter Region.
J. Kihl (2007)
10.1080/11263500902722709
Germination of stored and scarified seeds of Passiflora caerulea L. (Passifloraceae)
G. M. Mendiondo (2009)
10.1007/s00425-008-0808-z
Mesocarp cell turgor in Vitis vinifera L. berries throughout development and its relation to firmness, growth, and the onset of ripening
T. R. Thomas (2008)
10.4141/P03-100
Effect of seeding date on canola seed quality and seed vigour
L. V. Gusta (2000)
DORMÊNCIA EM SEMENTES DE ARROZ VERMELHO DORMANCY IN SEEDS OF RED RICE
C. Delatorre (2002)
10.1111/J.1365-2028.2009.01070.X
Germination responses of Spartidium saharae (Coss. & Dur.) Pomel (Fabaceae) to temperature and salinity
Zammouri Jamila (2010)
10.3107/JESSS.8.15
EFFECTS OF A WASHING PROCESS OF CATTLE MANURE ASH ON ROOT AND SHOOT GROWTH OF KOMATSUNA (BRASSICA RAPA VAR. PERVIRIDIS) AT THE SEEDLING STAGE
Quoc Thinh Tran (2017)
10.1007/s11738-013-1375-x
Magnetopriming circumvents the effect of salinity stress on germination in chickpea seeds
S. Thomas (2013)
10.1079/9780851994048.0085
Compartmentation of abscisic acid in developing muskmelon (Cucumis melo L.) seeds.
G. Welbaum (2000)
10.1007/BF00045913
Effect of abscisic acid, osmolarity and temperature onin vitro development of recalcitrant mango nucellar embryos
F. Pliego-Alfaro (1996)
10.1081/PLN-200052631
Seed Potassium Concentration Decline During Maturation Is Inversely Related to Subsequent Germination of Primrose
S. Zerche (2005)
10.1590/1983-21252015V28N316RC
MATURAÇÃO FISIOLÓGICA DE SEMENTES DE PIMENTA ‘BODE VERMELHA’
Vanessa Damasceno Gonçalves (2015)
See more
Semantic Scholar Logo Some data provided by SemanticScholar