An in vitro rescue method for immature embryo of avocado includes: collecting immature avocado hybrid fruits, stripping immature zygotic embryos from the sterilized fruits; inducing maturation of zygotic embryos in different media selected according to the maturities of zygotic embryos; and avocado seed embryos growing to normal plants under light conditions after germination. Provided is a technology for the in vitro culture rescue of immature embryo of avocado, wherein the zygotic embryos at different developmental stages are induced to maturation under in vitro conditions, and after maturation, the seed embryos are induced to germinate and form healthy plants. The present invention can effectively improve the survival rate of hybrid avocado zygotic embryo, increase the success rate of hybrid avocado, rescue the hybrid offspring, reduce the loss of hybrid offspring, ensure the genetic integrity of hybrid group, and provide the key technology for hybrid breeding and genetic research of avocado.

A new and distinct variety of olive tree, herein referred to by its cultivar name, ‘I-30’, is provided which forms an upright to spreading growth habit. Fruit with a low weight and acute shape is produced. The fruit exhibit black coloration and the fruit nipple is moderately present. The stone of the fruit of the new variety is of very low to low weight, very elongated and possess a weak rugose surface.

A new and distinct variety of olive tree, herein referred to by its cultivar name, ‘I-30’, is provided which forms an upright to spreading growth habit. Fruit with a low weight and acute shape is produced. The fruit exhibit black coloration and the fruit nipple is moderately present. The stone of the fruit of the new variety is of very low to low weight, very elongated and possess a weak rugose surface.

A new cultivar of Japanese haskap plant, ‘Hoka’, that exhibits a low vigor growth habit making it very desirable for home gardens with limited space, its high fruit yields, its very early fruit maturity that allows growers to spread the harvest season with other berry varieties, its fruit that are ornamental, large, and cylindrical with a sweet/tart flavor, its medium fruit attachment that is strong enough to prevent pre-harvest drop and loose enough to pick easily, and its fruit that maintains its appearance, firmness and taste for at least 4 weeks in cold storage at 33° F. to 35° F.

A new cultivar of Parrotia tree, ‘Chrishaven1’, that is characterized by its upright and columnar plant habit, its foliage that turns deep yellow in color (with apricot-red markings) in the fall, its strong angled branches that withstand wind and snow, its strong apical dominance, and its ability to be readily propagated from stem cuttings.

A new cultivar of Delosperma plant named ‘W1811’ that is characterized by its low growing plant habit, its very floriferous and long blooming flowering habit; blooming from early summer to early autumn, and its flowers that are vivid dark red in color with small yellow centers.

A new cultivar of Delosperma plant named ‘W1811’ that is characterized by its low growing plant habit, its very floriferous and long blooming flowering habit; blooming from early summer to early autumn, and its flowers that are vivid dark red in color with small yellow centers.

A new cultivar of Nandina domestica named ‘NanSid6’ that is characterized by its foliage with new growth that is reddish purple in color and fall foliage that is red in color, its finely dissected foliage, and its compact, upright mounding habit with dense foliage.

A new cultivar of Nandina domestica named ‘NanSid3’, characterized by its foliage with new growth that is reddish in color, its compact, upright mounding plant habit with dense foliage, and its fall color that is red in color.

‘Jinhudie’ is a distinctive variety of Broussonetia Plant, which is characterized by its color of leaves.