SEED GERMINATION RESPONSE TO PRETREATMENTS AND STORAGE BEHAVIOUR IN<i>SCHLEICHERA OLEOSA</i>(LOUR.) OKEN—INDIAN LAC TREE

Thapliyal, Manisha; Tewari, R. B.

doi:10.1080/14728028.2011.9756715

Cited by 3 publications

(3 citation statements)

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“…Imbibition test and water uptake by seed parts after sowing supports presence of physical dormancy in the seeds of this species. Thapliyal & Tewari (2011) also observed maximum germination of Scheleichera oleosa seeds which were after-ripened and mechanically scarified. Dormancy due to impermeability of seed coat and dormant embryo had been termed as combinational dormancy (Baskin & Baskin 1998).…”

Section: Discussionmentioning

confidence: 75%

“…Radhamani et al (2003) observed better germination in Schleichera oleosa seeds by breaking of seed coat and soaking overnight in water followed by Gibberellic Acid (GA 3 ) and opined that the seed had seed coat dormancy. Thapliyal & Tewari (2011) also concluded that mechanical scarification resulted maximum germination of S. oleosa seeds. They also observed after-ripening for 2 months could increase the germination percentage.…”

Section: Introductionmentioning

confidence: 95%

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Preliminary studies on seed dormancy of Schleichera oleosa (Lour.) Merr.

Kundu¹,

N²

2019

Trop Plant Res

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Schleichera oleosa is a tropical deciduous tree species distributed in south-east Asia. The aim of the present study was to investigate the nature of seed dormancy of Schleichera oleosa that have low germination under laboratory conditions. Seeds were treated by scarification, Gibberellic acid (GA), and combined treatment of scarification and GA before allowing them to imbibe in moist paper. Maximum water uptake was observed in seeds that were soaked in GA after scarification. The moisture content of seed coat remained unchanged during imbibition that suggests the water-impermeable nature of seed coat. Scarification accelerated germination, but it could not fully eliminate dormancy. The highest germination was found in the combined treatment of scarification and GA application. Dry storage at room temperature for 9 months broke dormancy and allowed germination of untreated seeds at 28C. The results indicate that Schleichera oleosa seeds exhibit both physical (for its water-impermeable seed coat) and physiological dormancy and need afterripening for 9 months to overcome the dormancy. The ecological perspective of dormancy of this tropical seed has been discussed.

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Section: Discussionmentioning

confidence: 75%

Section: Introductionmentioning

confidence: 95%

Preliminary studies on seed dormancy of Schleichera oleosa (Lour.) Merr.

Kundu¹,

N²

2019

Trop Plant Res

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“…There could be so many factors governing germination. 10, 19 Thapliyal & Tiwari (2011) 21 came up with the finding that Kusum seed germination increases up to 92 per cent when it is stored dry for two months in ambient temperature conditions compared to 15 per cent if sown during maturation. Scientists from Dehradun, India discussed that Kusum seeds collected from lower altitudes (250-500 m) perform the best in terms of fruit/ seed size and germination per cent.…”

Section: Introductionmentioning

confidence: 99%

Effect of sources of kusum (Schleichera oleosa (Lour) Oken) seed, its size and tree attributes on seed quality and seed germination

Ghosal

2022

J. Agric. Ecol.

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Kusum tree is considered to be the best lac host and is distributed throughout the country. The germination of kusum seeds is very much erratic. To through light on this erratic behavior, three experiments were conducted in Randomized Block Design on different aspects of seed germination and viability during 2014-18. It was found that higher seed viability test weight (61 g) and healthy seeds with lesser discolored/ infected seed per cent (40.1) were found in the year having higher rainfall (i.e. 2014 receiving 844 mm rainfall) during the growth and development period of fruits. Thus 104 mm higher rainfall could increase test weight 36 per cent and produce 47 per cent lesser infected seeds. Diurnal variation in temperature impacted quality seed production. Experimental findings also suggested that when seed weight was more than 700 mg, it performed better with higher germination per cent (13 and 46 per cent, respectively). Experimentation also suggested that better quality of Kusum seeds can be obtained from trees having higher ranges of tree exposure to sunshine (40-90 per cent), higher branch length (2.9-6.1 m) and several consecutive unpruned seasons (3.6-8.8).

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