Search Results

You are looking at 1 - 4 of 4 items for :

  • Author or Editor: Hong Lin x
  • HortScience x
Clear All Modify Search
Authors: and

The DNA extracted from cambium tissues of grape (Vitis spp., Muscadinia rotundifolia Small) rootstocks was found to be suitable for molecular analysis. Its quality was equivalent to that of DNA extracted from leaf tissues, although the yield was higher from leaves. The use of cambium tissue allows DNA extractions during dormancy or from grafted rootstocks where leaves are not available. The DNA extracted was suitable for restriction enzyme digestion and for analysis by restriction fragment length polymorphism (RFLP), randomly amplified polymorphic DNA (RAPD), and simple sequence repeats.

Free access

The effects of regenerant wastewater irrigation and high concentrations of Ca2+, K+, Mg2+, and Cl on growth and ion uptake of nine species of landscape plants were studied. Significant differences in chloride tolerance were detected among the species. Generally, the species that had greater uptake of chloride grew less than species that took up less amounts of chloride. Lace fern (Athyrium filix-femina Roth.) had the highest tissue Cl concentration and was the most affected. Hydrangea (Hydrangea macrophylla Ser.) also had high tissue Cl concentration, but showed no growth reduction. Its tolerance was attributable to a high tissue Ca concentration. The data suggest that in the species tested, higher tissue Ca concentrations were positively correlated with plant tolerance to Cl. Overall, the Cl concentration in the wastewater seems to be the factor most likely to create problems for the landscape plants. However, severe negative effects will probably be noticed only for very sensitive plant species, but it is important to determine this before applying regenerant irrigation water.

Free access

Abstract results showed that many germplasms of P. Armeniaca. P. persica and a few germplasms of P. Salicina had immersed into those of P. mume. Some cultivars (strains) possessed species characteristics coming from 2 or 3 of the 3 species in a single plant. All of the plants tested were transition types of the related varieties such as var. bungo and so on. Some new characteristics of P. mume were found in a few strains. The resources were classified into highly, mediumly and lightly backcrossed types. The mean yield index and fruit weight of highly back-crossed type (HB) were significantly higher than those of the other 2 types. The setting rate of HB was higher and significantly higher than that of lightly and mediumly type, respectively. There were no significant differences in mean bitter index and flower index among them.

Free access