Applications of a predominately gynoecious selfing line LC-03 in pumpkin breeding

Abstract

The invention discloses applications of a predominately gynoecious selfing line LC-03 in pumpkin breeding, particularly applications of cucurbita maxima LC-03 in pumpkin breeding. The accession number of the cucurbita maxima LC-03 is CGMCC NO.12032, and the cucurbita maxima LC-03 is also called the predominately gynoecious selfing line LC-03. The flowering periods of first female flowers of filial generations of the predominately gynoecious selfing line LC-03 that is adopted as a female parent and other selfing lines are earlier than those of male parents, female flower interval pitch numbers of the first female flowers are less than those of the male parents, and the filial generations shows early maturing, dense melons and melon growth potentials of the F1 hybrid. Transferred predominately gynoecious high-generation selfing lines show that the yield increasing effect is obvious, and therefore discovery and application of predominately gynoecious characters have increasingly functions for promoting development of the industry of pumpkin for seed use and pumpkin for table use and for increasing incomes of farmers. The popularization and application prospect of the hybridized combination of this type is wide.

Description

technical field [0001] The invention relates to the application of strong female inbred line LC-03 in pumpkin breeding. Background technique [0002] Seed pumpkin is one of the main economic crops in the dry farming area of ​​Northeast China. With the increasing demand for white melon seeds (generally referring to the seed varieties of Indian pumpkin seeds) in domestic and foreign markets, the income of growers has increased significantly. Enthusiasm is also increasing day by day. At the same time, the continuous improvement of planting technology and agricultural machinery is also the reason for the expansion of planting area year by year. However, due to many reasons such as the late start of seed pumpkin breeding in my country, the relative lack of resources, and insufficient financial support from higher authorities, the breeding of new seed pumpkin varieties lags behind that of other Cucurbitaceae crops, and the old varieties lack effective purification and rejuvenation...

AI Technical Summary

Problems solved by technology

However, due to many reasons such as the late start of seed pumpkin breeding in my country, the relative lack of resources, and insufficient financial support from higher authorities, the breeding of new seed pumpkin varieties lags behind that of other Cucurbitaceae crops, and the old varieties lack effective purification and rejuvenation. Measures, the conventional varieties currently used in production have shortcomings such as poor uniformity, weakened disease resistance, and unstable yields, which can no longer meet the rapidly growing production and market demand. Farmers urgently need more early-maturing, disease-resistant, high-quality, high-yielding varieties. Excellent varieties of pumpkins for seeds

[0003] At present, although some white melon seed hybrids have entered the market, due to the heavy workload and high cost of removing the male flowers of the hybrids during seed production, especially when the stems and leaves are emasculated after the stems and leaves are sealed in the middle and later stages of flowering, it is difficult to observe and detassell. Male incompleteness makes it difficult to ensure the purity of hybrids, thus affecting the yield and quality of white melon seeds

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