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Developing New Method for Estimation of Pear Fruit Surface Area

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Author:
No author available
Journal Title:
JOURNAL OF BIOMATHEMATICS
Issue:
1
DOI:
10.3969/j.issn.1001-9626.2000.01.005
Key Word:
梨;果实;表面积;测定方法;椭圆及线性方程;Pear;Fruit;Surface area;Estimation method;Elliptical and linear equations

Abstract: A geometric shape, which can be mathematically described by elliptical and linear equations,was proposed to represent pear fruit shapes. Then, a formula for estimation of pear fruit surface areawas derived from the equations mentioned above and a new method was established.The dimensional measurements of the new method were easy and rapid and were made only with a vernier calliper.After the transverse diameter, longitudinal diameter, width at the stalk end, recessed depth at the calyx end and length between maximum width and lower extremity of the pear fruit are determined, the pear fruit surface area can be calculated byusing the derived formula. The prediction accuracy of the new method was verified in two cultivars; their prediction errors were 1.86% and 2.52%, respectively.Thus, the new method provided reasonably accurate estimates of pear fruit surface areas.

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