Effects of Soaking Temperature, Stratification, Potassium Nitrate and Gibberellic Acid on Seed Germination of Loquat Trees

Shahi-Gharahlar, Ali; Yavari, Alireza; Khayyat, Mehdi; Jalali, Neda; Farhoudi, R.

doi:10.1080/01904167.2012.698353

Cited by 6 publications

(4 citation statements)

References 16 publications

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“…It has been reported that treatment of seeds with KNO 3 followed by moist chilling could improve germination percentage (Shahi-Gharahlar et al 2012). Few studies have assessed the simultaneous effects of temperature and nitrogen in seed dormancy regulation.…”

Section: Discussionmentioning

confidence: 99%

Effects of low temperature and nitrogen addition during cold stratification on seed germination of Korean pine (Pinus koraiensis)

Song

Gao

2021

Can. J. For. Res.

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Pinus koraiensis seeds are primary dormant following dispersal, restricting natural regeneration of populations. The aim of this study was to determine the combined effects of increasing low temperature and nitrogen addition during cold stratification on seed germination. We stratified seeds at 0 oC, 5 oC and 10 oC for 3.5 months. At each cold stratification temperature, seeds were subjected to 0 (0 nitrogen), 0.08 (low nitrogen), 0.16 (medium nitrogen) and 0.25 mol L-1(high nitrogen) nitrate additions. Seed germination response was tested at 25/15 oC and 10/5 oC. Under 0 nitrogen and high nitrogen levels, increasing cold stratification temperature did not remarkedly affect seed germination at 25/15 oC, but significantly inhibited seed germination at 10/5 oC. At medium nitrogen level, seed germination at both 25/15 oC and 10/5 oC were all significantly decreased. At low nitrogen level, increasing cold stratification temperature significantly decreased germination percentage at 25/15 oC from 86.7% (0 oC) to 50.2% (10 oC), but did not markedly change seed germination percentage at 10/5 oC. We suggest that the effect of increasing cold stratification temperature on seed germination of Pinus koraiensis depends on both the level of nitrogen addition during cold stratification and subsequent incubation temperature after cold stratification.

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Section: Discussionmentioning

confidence: 99%

Effects of low temperature and nitrogen addition during cold stratification on seed germination of Korean pine (Pinus koraiensis)

Song

Gao

2021

Can. J. For. Res.

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“…Abdollahi et al (2010) reported that 150 mM KNO 3 substantially increased the final germination percentage, radicle length and fresh weight of Sanguisorba minor Scop., Pimpinella anisum L., Melissa officinalis L. and Nigella sativa L. seeds germinated under normal conditions. Gharahlar et al (2012) determinated that 0.5% KNO 3 decreased the radicle length of Eriobotrya japonica Lindle. seeds germinated in distilled water medium while it increased fresh weight of the seedlings.…”

Section: Physiological and Cytogenetical Effects Of Kno 3 Under Normal Conditionsmentioning

confidence: 94%

Role of Potassium Nitrate (KNO3) in Alleviation of Detrimental Effects of Salt Stress on Some Physiological and Cytogenetical Parameters in Allium cepa L.

2017

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In this work, the effects of potassium nitrate (KNO 3 ) on the seed germination, seedling growth (radicle length, radicle number and fresh weight), mitotic activity and chromosomal aberrations of Allium cepa L. germinated under both normal conditions and salt stress were studied. The final germination percentages, radicle lengths, radical numbers and fresh weights of onion seeds germinated in the medium with KNO 3 alone were statistically the same as ones of the control seeds germinated in distilled water medium. In addition, the mitotic index in root tip meristems of A. cepa seeds germinated in the medium with KNO 3 alone demonstrated a decrease according to ones of the control seeds germinated in distilled water medium, while their frequency of chromosomal aberrations showed an increase according to the control. On the other hand, salt stress considerably inhibited the seed germination and seedling growth of A. cepa. Furthermore, it markedly decreased the mitotic index in root tip meristems of the seeds and increased the number of chromosomal aberrations. The detrimental effects of salt on the seed germination, seedling growth, mitotic activity and chromosomal aberrations was dramatically alleviated in varying degrees by KNO 3 application.

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“…The annual loquat cycle runs counter to that of the various temperate fruit crops as it blooms in autumn, develops its fruits during winter and ripens them in early spring [2]. The fruits have yellow-orange color with brown seeds as they ripe and also high sugar, acid and pectin content [3]. Loquat become an important commercial crop in several countries [4].…”

Section: Introductionmentioning

confidence: 99%

Plant Growth Regulators Affecting Leaf Traits of Loquat Seedling

Surya

Ismaini

Normasiwi

et al. 2020

ARRB

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Leaf is a key functional traits that shows respond of changes in plant physiology. This experiment aimed to study the changes on the leaf traits of loquat seedling that treated with plant growth regulators (PGRs). Three types of PGRs, auxin (naphthalene acetic acid/NAA), gibberellin (gibberellic acid/GA3) and cytokinin (benzylaminopurine/BA) with four doses (0, 25, 50, 100 ppm) were sprayed onto the leaves of loquat seedling. We observed nine parameters, PGRs treatments were significantly affecting eight parameters, while there were one parameter is not significantly affected. The results showed that either in mature or young leaves, PGRs treatments were significantly affecting in eight parameters the growth and development of leaves, such as leaf surface area, specific leaf area, fresh and dry weight leaf, water content, number of stomata, size of stomata, chlorophyll and transpiration rate compared to control. These results gave general view that PGRs treatment might stimulate leaf growth and development including photosynthesis and respiration. However, PGRs was not significantly affecting the number of stomata in young leaves. The application of PGRs doses was not always inline with the mean value of each parameters and it could be linear or quadratic models. The findings of this research could provide the recommendation for application of PGRs during seedling growth, and theoretical basis for comparison between mature and young leaves after PGRs application.

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Effects of Soaking Temperature, Stratification, Potassium Nitrate and Gibberellic Acid on Seed Germination of Loquat Trees

Cited by 6 publications

References 16 publications

Effects of low temperature and nitrogen addition during cold stratification on seed germination of Korean pine (Pinus koraiensis)

Effects of low temperature and nitrogen addition during cold stratification on seed germination of Korean pine (Pinus koraiensis)

Role of Potassium Nitrate (KNO<sub>3</sub>) in Alleviation of Detrimental Effects of Salt Stress on Some Physiological and Cytogenetical Parameters in <i>Allium cepa</i> L.

Plant Growth Regulators Affecting Leaf Traits of Loquat Seedling

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