Effect of pre-soaking treatments and temperature on seed germination of guava (Psidium guajava L.)

Bhanuprakash, K.; Yogeesha, H. S.; Vasugi, C.; Arun, M. N.; Naik, L. B.

doi:10.15258/sst.2008.36.3.30

Cited by 9 publications

(3 citation statements)

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“…The best germination in lettuce was obtained with seeds primed in the dark [37]. Light played a vital role in maximizing seed germination with guava seeds primed at 12 h of light and 12 h of dark [54].…”

Section: Lightmentioning

confidence: 99%

“…The use of plant hormones and other plant growth regulators as seed pre-sowing treatment can improve plant growth under stressful conditions [28]. Pre-soaking GA 3 in guava seeds at 100 ppm at a temperature range of 32°C/20°C resulted in a significant increase in germination to 84-88% compared to unprimed seeds [54]. Seed priming with GA 3 (100 ppm) for 24 h at low concentration and priming temperature at 15°C in cowpea increased the leaf area index, relative growth rate, crop growth rate and net assimilation rate under limited soil water conditions [142].…”

Section: Priming With Plant Growth Regulatorsmentioning

confidence: 99%

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Seed Priming: The Way Forward to Mitigate Abiotic Stress in Crops

Arun¹,

Hebbar²,

Bhanuprakash³

et al. 2022

Physiology

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Abiotic stress is a major threat to the farming community, biasing the crop productivity in arid and semi-arid regions of the world. The seed is an important component of agriculture, contributing significantly to the booming production of food and feed crops across the different agro-ecological regions of the world with constant challenges with reference to production, storage, and quality control. Germination, plant growth, and development via non-normal physiological processes are detrimentally affected by stress. Seed priming is an alternative, low cost, and feasible technique, which can improve various abiotic stress tolerances through enhanced and advanced seed production. Seed priming is a process that involves imbibing seed with a restricted amount of water to allow sufficient hydration and advancement of metabolic processes but preventing germination. The beneficial influence of priming on the germination performance of diverse species is attributed to the induction of biochemical mechanisms of cell repair: the resumption of metabolic activity that can re-impose cellular integrity, through the synthesis of nucleic acids (DNA and RNA) and proteins and the improvement of the antioxidant defense system metabolic damage incurred by dry seed and thus fortifying the metabolic machinery of the seed. With this background, this chapter highlights the morphological, physiological, biochemical, and molecular responses of seed priming and recent advances in priming methods as a tool to combat abiotic stress in crop plants.

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Section: Lightmentioning

confidence: 99%

Section: Priming With Plant Growth Regulatorsmentioning

confidence: 99%

Seed Priming: The Way Forward to Mitigate Abiotic Stress in Crops

Arun¹,

Hebbar²,

Bhanuprakash³

et al. 2022

Physiology

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“…Guava is a heliophyllic species. Its seeds need a long photoperiod (>10 h) with temperatures ranging between 20 and 30 • C to attain > 90% germination (Sugahara and Takaki, 2004). Exposure of mature trees to direct sunlight guarantees abundant fruiting with increased branch growth (Paull and Duarte, 2012).…”

Section: Figure 4 |mentioning

confidence: 99%

The Taming of Psidium guajava: Natural and Cultural History of a Neotropical Fruit

et al. 2021

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Guava (Psidium guajava L., Myrtaceae) is a Neotropical fruit that is widely consumed around the world. However, its evolutionary history and domestication process are unknown. Here we examine available ecological, taxonomic, genetic, archeological, and historical evidence about guava. Guava needs full sunlight, warm temperatures, and well-distributed rainfall throughout the year to grow, but tolerates drought. Zoochory and anthropochory are the main forms of dispersal. Guava’s phylogenetic relationships with other species of the genus Psidium are unclear. A group of six species that share several morphological characteristics are tentatively accepted as the Psidium guajava complex. DNA analyses are limited to the characterization of crop genetic diversity within localities and do not account for possible evolutionary and domestication scenarios. A significant amount of archeological information exists, with a greater number and older records in South America than in Mesoamerica, where there are also numerous historical records. From this information, we propose that: (1) the guava ancestor may have originated during the Middle or Late Miocene, and the savannas and semi-deciduous forests of South America formed during the Late Pleistocene would have been the most appropriate ecosystems for its growth, (2) the megafauna were important dispersers for guava, (3) dispersal by humans during the Holocene expanded guava’s geographic range, including to the southwestern Amazonian lowlands, (4) where its domestication may have started, and (5) with the European conquest of the Neotropics, accompanied by their domestic animals, new contact routes between previously remote guava populations were established. These proposals could direct future research on the evolutionary and domestication process of guava.

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Seeds

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Effect of pre-soaking treatments and temperature on seed germination of guava (Psidium guajava L.)

Cited by 9 publications

References 0 publications

Seed Priming: The Way Forward to Mitigate Abiotic Stress in Crops

Seed Priming: The Way Forward to Mitigate Abiotic Stress in Crops

The Taming of Psidium guajava: Natural and Cultural History of a Neotropical Fruit

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