Eat melon mass gospel test "blood type" to produce crisp sweet not easy to crack watermelon.

Original title: Eat melon mass gospel test "blood type" bred crisp sweet not easy to crack watermelon
the interviewees for figure
fruit cracking is a common natural phenomenon, but the field or picked fruit cracking, but will reduce economic benefits. Recently, Professor Zhang Mingfang of Zhejiang University's School of Agriculture and
Bio
Technology discovered for the first time the
gene
related to the new
fresh fruit
real crack resistance, which will help accelerate the precise breeding of high-quality varieties resistant to cracking.The
team conducted an experimental survey of more than 400 hybrid second-generation watermelons by measuring 8 evaluation indicators such as peel hardness and rupture rate (active rupture glycepter formed by the same force cut
watermelon
) and then hybridized watermelons with significant differences in crack resistance according to these indicators. After sequencing 159 random samples, the researchers found that all crack-resistant indicators were jointly located on chromosome 10 of the watermelon.
initially locked chromosome 10, the team used hybrid second-generation individual watermelons and their third-generation watermelons to lock down key genes.
Zhang Mingfang with "blood type" to make an example, if the crack-resistant watermelon "blood type" is "type A", then the impatient cracking is "B-type", and some are "AB-type". He explained that in nature, on chromosome 10 of different watermelon species, there are two types of allergens, ERF4-a and ERF4-b, which are basically crack-resistant to watermelons with the same ERF4-a gene as the crack-resistant parents in this experiment;
, the team developed molecular markers that could quickly test which "blood type" the watermelon belonged to, using a small leaf to extract DNA for analysis. Zhang Mingfang's team found that only in the facilities cultivation (such as greenhouses and other artificial environment) watermelon varieties will find more "B-type", and dewy cultivation of watermelon varieties, basically all pure "A-type" or hybrid "AB-type."
from our daily experience, we can also find that the peels of watermelon varieties must be tougher when growing in the open air is hit by the wind and rain." "In fact, in the 'AB type' varieties, it is more likely to find crack-resistant and crispy sweet and delicious watermelons, " Hu said. "
"A" and "AB" watermelons more resistant to cracking? The team found that crack-resistant genes are likely to regulate the growth and accumulation of ligands in watermelons, which act like steel bars on cell walls, making them stronger, more resilient and harder.
Zhang Mingfang introduced, crack-resistant high-quality watermelon breeding, no longer need to carry out crack-resistant choice in each generation, just choose "A-type" or "AB-type" materials to carry out field cultivation, and then choose from the fruit meat quality is better and more crack-resistant individual breeding offspring. This will not only reduce the amount of cultivation per season, but also significantly reduce the time it takes to obtain the target variety.
.