(cv ArthurV)USPP# 18.782P3
Bright’s Hybrid® (selection 5) is an advanced selection of one of the most popular peach/almond hybrid rootstocks. Bright’s Hybrid®5 is moderately vigorous for a peach-almond hybrid, nematode resistant, deep rooting, well anchored, and drought tolerant. Vigor and productivity are superior to Nemaguard. The anchorage is similar to other well-anchored peach almond hybrids. It has excellent Rootknot Nematode resistance. Clonal propagation of this rootstock provides more uniform growth and performance than Bright’s Hybrid® from seed. This selection was a survivor in an orchard with high pH due to excess calcium.
PARENTAGE: Peach x Almond hybrid
ORIGIN: Bright’s Nursery, Inc., Le Grande, CA
OLDEST TEST SITES IN THE US: 2004 in California with Almonds
COMPATIBILITY: Almonds, peach, plum (European and Japanese), and apricots.
VIGOR: In good peach soil, 95% of Nemaguard.
GROWTH UNIFORMITY: Excellent. Rootstock is clonally propagated, not seed propagated.
ROOTSTOCK INDUCED TREE FORM: More spreading than Nemaguard.
ANCHORAGE: Good, similar to other peach x almond rootstocks.
YIELD EFFICIENCY: With almond, yield efficiency is similar to Nemaguard.
SUCKERING: Produces virtually no suckers.
CHILLING REQUIREMENT: Appears similar to Nemaguard.
COLD HARDINESS: Unknown
NEMATODE RESISTANCE: Excellent resistance to Rootknot Nematode. Low susceptibility to Lesion Nematode. Ring Nematode resistance is unknown, but not likely present.
EFFECT OF ROOTSTOCK ON BACTERIAL CANKER SUSCEPTIBILITY: Unknown. Presumed to be more susceptible than Nemaguard.
OAK ROOT FUNGUS TOLERANCE: Untested.
PHYTOPHTHORA SENSITIVITY: Unknown.
VERTICILLIUM RESISTANCE: Good.
ASPHIXIA TOLERANCE: Unknown.
DROUGHT TOLERANCE: Due to deep rooting, it is presumed to have some drought tolerance.
CROWN GALL SUSCEPTIBILITY: Unknown, but not extreme.
HIGH pH TOLERANCE: Selected as a survivor in an orchard with high pH due to excess calcium.
CALCAREOUS SOIL TOLERANCE: Good.
REPLANT DISORDER SUSCEPTIBILITY: Similar to Hansen 536.
PROPAGATION METHODS: In Vitro culture.