Studies on maintaining seed longevity and the effect of fruit grades in Neem (Azadirachta indica)

Ponnuswamy A.S., . and Vinaya Rai R.S., . and Surendran C., . and Karivaratharaju T.V., . Studies on maintaining seed longevity and the effect of fruit grades in Neem (Azadirachta indica). pp. 285-290. ISSN 0128-1283

Grading of neem (Azadirachta indica) depulped fruits by the floatation method gave 18 floaters. These weighed comparatively less than the sinkers possessed a higher endocarp content and recorded low viability in terms of maximum germinability and also vigour. The sinkers in contrast recorded an increase of 35 in viability and 92 in vigour index. In a separate study seeds stored at an ambient temperature of 33.8 C recorded a germinability of 8 at the end of three months compared to 90 when freshly collected. This is attributed to desiccation injury as the moisture content dropped from an initial 30.8 to a low 15.5 at the end of three months. In contrast seeds stored in earthern pots buried in moist sand bed manifested little loss in seed moisture content and recorded a germinability of 62 at the end of three months. Density grading for maximising viability and vigour and moist storage in earthern pots for prolonging longevity is recommended for the species.

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Abstract

Grading of neem (Azadirachta indica) depulped fruits by the floatation method gave 18 floaters. These weighed comparatively less than the sinkers possessed a higher endocarp content and recorded low viability in terms of maximum germinability and also vigour. The sinkers in contrast recorded an increase of 35 in viability and 92 in vigour index. In a separate study seeds stored at an ambient temperature of 33.8 C recorded a germinability of 8 at the end of three months compared to 90 when freshly collected. This is attributed to desiccation injury as the moisture content dropped from an initial 30.8 to a low 15.5 at the end of three months. In contrast seeds stored in earthern pots buried in moist sand bed manifested little loss in seed moisture content and recorded a germinability of 62 at the end of three months. Density grading for maximising viability and vigour and moist storage in earthern pots for prolonging longevity is recommended for the species.

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Item Type:	Article
AGROVOC Term:	Neem (tree)
AGROVOC Term:	Azadirachta indica
AGROVOC Term:	Fruits
AGROVOC Term:	Grading
AGROVOC Term:	Seed storage
AGROVOC Term:	Germination
AGROVOC Term:	Seed vigour
AGROVOC Term:	Viability
AGROVOC Term:	Seed moisture content
AGROVOC Term:	Seed longevity
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:27
URI:	http://webagris.upm.edu.my/id/eprint/22662

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