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The Richards function and quantitative analysis of germination and dormancy in meadowfoam (Limnanthes alba)

  • Canhong Cheng (a1) and Ian L. Gordon (a2)

Abstract

While investigating germinability in the new-crop meadowfoam (Limnanthes alba Benth.), it was desired to gain maximum information despite minimal seed material and prior knowledge. Extended use of the Richards function in a factorial germination experiment proved very powerful. The functions yielded estimates of four correlated coefficients, requiring multivariate analysis of variance (MANOVA) to provide valid F-tests among germination profiles. These germination functions provided more rigorous discrimination among treatments than the univariate final germination level. The functions for the imbibants KNO3 and GA4+7, in darkness at 10/5°C, were best, being characterized by high mean absolute germination rate, relatively short duration, and high final germination (upper asymptote). The results provided insights into possible dormancy mechanisms.

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*Correspondence Fax: +64 7 573 3871 Email: ccheng@hort.cri.nz

References

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The Richards function and quantitative analysis of germination and dormancy in meadowfoam (Limnanthes alba)

  • Canhong Cheng (a1) and Ian L. Gordon (a2)

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