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  • Author or Editor: Andrew H. Kuniyuki x
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Abstract

Apical and lateral meristems of Paradox walnut (Juglans hindsii x J. regia) were used to investigate the possibility of accomplishing in vitro propagation of Paradox rootstock. A walnut specific medium, DKW, has been defined supporting optimum multiple shoot development under 4.5 μm benzyladenine (BA) and 5 nm indolebutyric acid (IBA) treatment. The method of analysis to determine the optimum level of constituents in tissue culture medium is discussed. Also reported is the in vivo rooting of tissue culture derived shoots.

Open Access

Abstract

Viroids could not be detected in nucleic acid samples of almond [Prunus dulcis (Mill.) D.A. Webb] with noninfectious bud failure by one- and two-dimensional electrophoresis. Almond nucleic acids showed no detectable hybridization with a 32P-labeled potato spindle tuber viroid (PSTV) cDNA probe. PSTV controls were included.

Open Access

Abstract

Germination of stone fruit seeds is accelerated at an elevated percentage if the stony endocarp (pit) is removed prior to planting. Stone fruit breeders and those who screen seed populations usually remove pits with bench vice jaws that manually compress pits either end-to-end or edge-to-edge to affect seed release. The vice was effective but production was low and seasonal production was limited. Consequently, efforts were initiated to find means to alleviate the problem of low seed release productivity while maintaining the effectiveness of the vise.

Open Access